Alert archive / Louisiana / Tornado Watches in 2019
Tornado Watch 154
The Storm Prediction Center issued this tornado watch at May 8, 2019, 4:02 PM CDT for 10 counties in Arkansas; 17 parishes in Louisiana. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 8, 2019, 4:02 PM CDT (21:02 UTC)
- Expired
- May 8, 2019, 8:39 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 27 counties
Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Cleveland County, AR, Desha County, AR, Drew County, AR, Lincoln County, AR, Ouachita County, AR, Union County, AR, Caldwell Parish, LA, Catahoula Parish, LA, Concordia 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, Ouachita Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA
The radar
The Jackson/Brandon,MS radar (KDGX), 190 km from the middle of the area, began a volume at 21:01 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 4:17 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Union | 58 min |
| May 8, 4:21 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Clark, Dallas, Ouachita | 39 min |
| May 8, 4:22 PM CDT | Tornado Warning | SHV | Columbia, Union | 53 min |
| May 8, 4:27 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Claiborne, Jackson, Lincoln, Red River, Union and 1 more | 63 min |
| May 8, 4:43 PM CDT | Severe Thunderstorm Warning | LZK | Cleveland, Dallas | 47 min |
| May 8, 4:54 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Calhoun, Cleveland, Dallas, Ouachita | 51 min |
| May 8, 4:56 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Ouachita | 37 min |
| May 8, 5:03 PM CDT | Severe Thunderstorm Warning | SHV | Union | 57 min |
| May 8, 5:09 PM CDT | Flash Flood Warning | LZK | Calhoun, Clark, Cleveland, Dallas, Grant, Hot Spring and 1 more | 3 hr |
| May 8, 5:17 PM CDT | Tornado Warning | SHV | Bienville, Jackson, Natchitoches, Winn | 43 min |
| May 8, 5:22 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Calhoun, Drew | 38 min |
| May 8, 5:22 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Grant, Jackson, Natchitoches, Winn | 53 min |
| May 8, 5:30 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Caldwell, Claiborne, Jackson, Lincoln, Ouachita and 1 more | 60 min |
| May 8, 5:42 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Calhoun, Cleveland, Dallas, Drew, Jefferson and 1 more | 48 min |
| May 8, 5:45 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Cleveland, Desha, Drew, Lincoln | 31 min |
| May 8, 5:47 PM CDT | Tornado Warning | SHV | Jackson, Ouachita | 43 min |
| May 8, 5:53 PM CDT | Tornado Warning | SHV | Jackson, Lincoln, Ouachita, Union | 27 min |
| May 8, 6:04 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, LaSalle | 56 min |
| May 8, 6:11 PM CDT | Severe Thunderstorm Warning | LZK | Arkansas, Cleveland, Desha, Drew, Jefferson, Lincoln | 19 min |
| May 8, 6:11 PM CDT | Severe Thunderstorm Warning | JAN | Franklin, Morehouse, Richland | 79 min |
| May 8, 6:17 PM CDT | Severe Thunderstorm Warning | SHV | Ouachita, Union | 43 min |
| May 8, 6:25 PM CDT | Severe Thunderstorm Warning | JAN | Catahoula | 67 min |
| May 8, 6:28 PM CDT | Tornado Warning | SHV | Ouachita, Union | 32 min |
| May 8, 6:42 PM CDT | Tornado Warning | JAN | Morehouse, Richland | 63 min |
| May 8, 6:55 PM CDT | Tornado Warning | JAN | Franklin, Tensas | 15 min |
| May 8, 7:02 PM CDT | Flash Flood Warning | LZK | Arkansas, Cleburne, Independence, Jackson, Jefferson, Lincoln and 5 more | 3 hr |
| May 8, 7:02 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Madison, Tensas, West Carroll | 73 min |
| May 8, 7:02 PM CDT | Flash Flood Warning | SHV | Grant, LaSalle | 3 hr |
| May 8, 7:08 PM CDT | Tornado Warning | JAN | East Carroll, West Carroll | 45 min |
| May 8, 7:10 PM CDT | Severe Thunderstorm Warning | JAN | Concordia, Tensas | 65 min |
| May 8, 7:14 PM CDT | Severe Thunderstorm Warning | JAN | Ashley, Chicot | 61 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
Jackson, MS (KJAN), launched 12:00Z, 9.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2014 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 27 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 |
|---|---|---|---|---|
| May 8, 2:16 PM CDT | Tornado Watch | SPC | Columbia, Hempstead, Lafayette, Miller, Nevada | 6 hr |
| May 8, 3:48 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Drew and 3 more | 117 min |
| May 8, 5:55 PM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Cleveland, Drew, Union | 95 min |
| May 8, 2:07 PM CDT | Mesoscale Discussion | SPC | Beauregard, Bossier, Caddo, De Soto, Natchitoches, Red River and 3 more | 53 min |
| May 8, 6:45 PM CDT | Tornado Watch | SPC | Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 30 more | 5 hr |
Nearby
Tornado Watches in Louisiana, 2019Tornado Watches in Arkansas, 2019Every tornado watch in 2019
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.