Alert archive / Mississippi / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 86
The Storm Prediction Center issued this severe thunderstorm watch at Apr 11, 2016, 6:58 PM CDT for 26 parishes in Louisiana; 27 counties in Mississippi; 5 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2016, 6:58 PM CDT (23:58 UTC)
- Expired
- Apr 12, 2016, 12:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 58 counties
Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Carroll 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, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Greene County, MS, Hinds County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Newton County, MS, Perry County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Warren County, MS, Wayne County, MS, Cherokee County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX
The radar
The Ft Polk radar (KPOE), 144 km from the middle of the area, began a volume at 00:05 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- 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
- 5%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 7:17 PM CDT | Flash Flood Warning | SHV | Bienville, Jackson, Ouachita | 3 hr |
| Apr 11, 7:31 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 59 min |
| Apr 11, 7:48 PM CDT | Flash Flood Warning | SHV | Bienville, Bossier, Caddo, Claiborne, Webster | 2 hr |
| Apr 11, 7:52 PM CDT | Flash Flood Warning | JAN | East Carroll, Morehouse, West Carroll | 3 hr |
| Apr 11, 7:55 PM CDT | Flash Flood Warning | JAN | Covington, Jasper, Jones, Smith | 9 hr |
| Apr 11, 8:28 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Gregg, Harrison, Rusk, Smith | 62 min |
| Apr 11, 8:39 PM CDT | Flash Flood Warning | JAN | Hinds, Madison, Rankin | 3 hr |
| Apr 11, 9:13 PM CDT | Severe Thunderstorm Warning | SHV | Panola, Rusk | 49 min |
| Apr 11, 9:40 PM CDT | Flash Flood Warning | JAN | East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more | 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
Jackson, MS (KJAN), launched 12:00Z, 12.0 hours before the alert went out and 164 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 445 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 11, 11:48 AM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Claiborne, East Carroll, Franklin and 9 more | 2 hr |
| Apr 11, 12:15 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Catahoula, Concordia, East Feliciana, Evangeline and 12 more | 3 hr |
| Apr 11, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Avoyelles, Beauregard, Bienville, Bossier, Caddo and 31 more | 6 hr |
| Apr 11, 3:42 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Bienville, Caldwell, Catahoula, Claiborne and 25 more | 93 min |
| Apr 11, 6:09 PM CDT | Mesoscale Discussion | SPC | Avoyelles, Bienville, Caldwell, Catahoula, Claiborne, Concordia and 23 more | 66 min |
| Apr 11, 6:40 PM CDT | Mesoscale Discussion | SPC | Clarke, Covington, Forrest, Greene, Jones, Lamar and 2 more | 65 min |
| Apr 10, 7:36 PM CDT | Mesoscale Discussion | SPC | Montague | 114 min |
| Apr 10, 8:54 PM CDT | Mesoscale Discussion | SPC | Dimmit, Edwards, Kinney, Maverick, Real, Uvalde and 2 more | 66 min |
| Apr 10, 9:31 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Childress, Clay, Cooke, Cottle and 19 more | 59 min |
| Apr 10, 9:52 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Cooke, Foard, Hardeman and 4 more | 6 hr |
| Apr 10, 11:06 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Comal, Dimmit, Frio and 9 more | 54 min |
| Apr 11, 6:15 AM CDT | Mesoscale Discussion | SPC | Clay, Collin, Cooke, Delta, Denton, Fannin and 7 more | 3 hr |
| Apr 11, 12:39 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Camp, Clay, Collin, Cooke and 33 more | 2 hr |
| Apr 11, 1:38 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Bowie, Camp, Cass, Cherokee and 46 more | 9 hr |
| Apr 11, 1:43 PM CDT | Mesoscale Discussion | SPC | Austin, Brazos, Grimes, Hardin, Harris, Liberty and 8 more | 3 hr |
| Apr 11, 3:26 PM CDT | Mesoscale Discussion | SPC | Clay, Collin, Cooke, Dallas, Delta, Denton and 18 more | 94 min |
| Apr 11, 4:49 PM CDT | Mesoscale Discussion | SPC | Collin, Dallas, Denton, Hunt, Rains, Rockwall and 1 more | 86 min |
| Apr 11, 5:27 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Fisher, Haskell, Jones, King and 7 more | 93 min |
Nearby
Severe Thunderstorm Watches in Mississippi, 2016Severe Thunderstorm Watches in Louisiana, 2016Severe Thunderstorm Watches in Texas, 2016Every severe thunderstorm watch in 2016
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.