Alert archive / Louisiana / Tornado Watches in 2014
Tornado Watch 107
The Storm Prediction Center issued this tornado watch at Apr 28, 2014, 4:40 AM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2014, 4:40 AM CDT (09:40 UTC)
- Expired
- Apr 28, 2014, 12:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 58 counties
Ashley County, AR, Chicot County, AR, Union County, AR, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Bolivar County, MS, Carroll County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Montgomery County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS, Angelina County, TX, Hardin County, TX, Jasper County, TX, Nacogdoches County, TX, Newton 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
The radar
The Jackson/Brandon,MS radar (KDGX), 178 km from the middle of the area, began a volume at 09:42 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 4:56 AM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Polk, Trinity, Walker | 49 min |
| Apr 28, 5:27 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, De Soto, Jackson, Natchitoches, Red River, Sabine and 1 more | 48 min |
| Apr 28, 5:38 AM CDT | Severe Thunderstorm Warning | JAN | Bolivar | 52 min |
| Apr 28, 6:45 AM CDT | Severe Thunderstorm Warning | SHV | Sabine | 45 min |
| Apr 28, 6:50 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Union | 55 min |
| Apr 28, 6:57 AM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 48 min |
| Apr 28, 8:21 AM CDT | Severe Thunderstorm Warning | JAN | Franklin, Richland | 39 min |
| Apr 28, 8:24 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Winn | 36 min |
| Apr 28, 8:51 AM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Madison, West Carroll | 54 min |
| Apr 28, 11:15 AM CDT | Severe Thunderstorm Warning | JAN | Chicot | 45 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, 9.7 hours before the alert went out and 180 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
- 1893 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1351 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:15 PM CDT | Mesoscale Discussion | SPC | Faulkner | 30 min |
| Apr 27, 7:29 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more | 91 min |
| Apr 27, 7:53 PM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more | 6 hr |
| Apr 27, 8:09 PM CDT | Mesoscale Discussion | SPC | Columbia, Lafayette, Miller, Union | 66 min |
| Apr 27, 8:43 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Cleburne, Cleveland, Conway, Craighead and 45 more | 62 min |
| Apr 27, 9:59 PM CDT | Mesoscale Discussion | SPC | Calhoun, Clark, Cleburne, Cleveland, Columbia, Conway and 36 more | 91 min |
| Apr 27, 10:33 PM CDT | Tornado Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleveland, Conway and 27 more | 7 hr |
| Apr 27, 11:08 PM CDT | Tornado Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 6 hr |
| Apr 27, 11:21 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 38 more | 84 min |
| Apr 27, 11:41 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 2 more | 94 min |
| Apr 28, 1:43 AM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more | 8 hr |
| Apr 28, 2:50 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 25 more | 115 min |
| Apr 28, 4:21 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Columbia, Drew, Union | 54 min |
| Apr 28, 7:16 AM CDT | Mesoscale Discussion | SPC | Chicot | 89 min |
| Apr 28, 9:53 AM CDT | Mesoscale Discussion | SPC | Chicot | 97 min |
| Apr 27, 10:45 PM CDT | Mesoscale Discussion | SPC | Bossier, Caddo, De Soto, Sabine | 2 hr |
| Apr 28, 12:05 PM CDT | Mesoscale Discussion | SPC | Caldwell, Catahoula, Concordia, East Carroll, Franklin, LaSalle and 5 more | 115 min |
| Apr 28, 12:39 PM CDT | Tornado Watch | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Richland and 2 more | 8 hr |
| Apr 28, 3:55 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Evangeline, Jefferson Davis, Rapides, Vernon | 2 hr |
| Apr 27, 7:03 PM CDT | Mesoscale Discussion | SPC | Calhoun, Chickasaw, Clay, Grenada, Itawamba, Lafayette and 10 more | 87 min |
| Apr 28, 6:57 AM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Lafayette, Lee, Marshall, Pontotoc and 4 more | 2 hr |
| Apr 28, 2:09 PM CDT | Mesoscale Discussion | SPC | Alcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 32 more | 66 min |
| Apr 28, 3:49 PM CDT | Mesoscale Discussion | SPC | Choctaw, Clay, Itawamba, Leake, Lowndes, Monroe and 4 more | 86 min |
| Apr 28, 5:22 PM CDT | Mesoscale Discussion | SPC | Attala, Chickasaw, Choctaw, Clay, Hinds, Holmes and 18 more | 83 min |
Nearby
Tornado Watches in Louisiana, 2014Tornado Watches in Mississippi, 2014Tornado Watches in Texas, 2014Every tornado 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.