Alert archive / Mississippi / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 84
The Storm Prediction Center issued this severe thunderstorm watch at Apr 11, 2016, 1:05 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2016, 1:05 PM CDT (18:05 UTC)
- Expired
- Apr 11, 2016, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 94 counties
Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Columbia County, AR, Desha County, AR, Drew County, AR, Lafayette County, AR, Nevada County, AR, Ouachita County, AR, Union County, AR, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, 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, East Feliciana 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, Pointe Coupee Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, West Carroll Parish, LA, West Feliciana Parish, LA, Winn Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS, Jasper County, TX, Newton County, TX, Sabine County, TX
The radar
The Shreveport radar (KSHV), 154 km from the middle of the area, began a volume at 18:06 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
- 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
- 70%
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 1:10 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Ouachita | 65 min |
| Apr 11, 1:26 PM CDT | Tornado Warning | SHV | Columbia, Union | 49 min |
| Apr 11, 1:27 PM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Desha | 33 min |
| Apr 11, 1:56 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Calhoun, Drew | 64 min |
| Apr 11, 2:11 PM CDT | Severe Thunderstorm Warning | SHV | Union | 49 min |
| Apr 11, 3:24 PM CDT | Severe Thunderstorm Warning | JAN | Holmes | 51 min |
| Apr 11, 3:29 PM CDT | Flash Flood Warning | SHV | Bienville, Claiborne, Lincoln, Ouachita, Union | 9 hr |
| Apr 11, 3:50 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Leflore | 55 min |
| Apr 11, 3:53 PM CDT | Flash Flood Warning | JAN | East Carroll, Morehouse, West Carroll | 4 hr |
| Apr 11, 4:14 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Claiborne, Webster | 46 min |
| Apr 11, 4:19 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Yazoo | 44 min |
| Apr 11, 4:29 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 46 min |
| Apr 11, 4:35 PM CDT | Severe Thunderstorm Warning | JAN | Hinds, Madison | 55 min |
| Apr 11, 5:07 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Rankin, Scott | 68 min |
| Apr 11, 5:22 PM CDT | Flash Flood Warning | SHV | Columbia, Union | 6 hr |
| Apr 11, 5:28 PM CDT | Severe Thunderstorm Warning | JAN | Rankin, Smith | 62 min |
| Apr 11, 5:35 PM CDT | Severe Thunderstorm Warning | SHV | Union | 42 min |
| Apr 11, 6:03 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Nevada | 45 min |
| Apr 11, 6:08 PM CDT | Flash Flood Warning | JAN | Hinds, Madison, Rankin | 3 hr |
| Apr 11, 6:16 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 46 min |
| Apr 11, 6:27 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale | 28 min |
| Apr 11, 6:42 PM CDT | Flash Flood Warning | SHV | Bienville, Jackson, Lincoln, Ouachita | 6 hr |
| Apr 11, 6:49 PM CDT | Flash Flood Warning | JAN | East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more | 3 hr |
| Apr 11, 6:51 PM CDT | Tornado Warning | SHV | Bienville | 24 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 12:00Z, 6.1 hours before the alert went out and 145 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
- 520 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 389 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 12:57 AM CDT | Severe Thunderstorm Watch | SPC | Crawford, Sebastian, Washington | 4 hr |
| Apr 11, 11:48 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 15 more | 2 hr |
| Apr 11, 1:38 PM CDT | Severe Thunderstorm Watch | SPC | Hempstead, Howard, Little River, Miller, Polk, Sevier | 9 hr |
| Apr 11, 3:42 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Chicot, Columbia, Drew, Union | 93 min |
| Apr 11, 6:09 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Drew and 2 more | 66 min |
| Apr 11, 12:15 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Catahoula, Concordia, East Feliciana, Evangeline and 12 more | 3 hr |
| Apr 11, 6:58 PM CDT | Severe Thunderstorm Watch | SPC | Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 20 more | 5 hr |
| 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, 1:43 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 Arkansas, 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.