Alert archive / Louisiana / Tornado Watches in 2024
Tornado Watch 23
The Storm Prediction Center issued this tornado watch at Feb 12, 2024, 3:43 AM CST for 6 parishes in Louisiana; Hancock County, Harrison County, Jackson County, Mississippi. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 12, 2024, 3:43 AM CST (09:43 UTC)
- Expired
- Feb 12, 2024, 6:55 AM CST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 55 kt
Counties Jefferson Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Tammany Parish, LA, Hancock County, MS, Harrison County, MS, Jackson County, MS
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 4:07 AM CST | Severe Thunderstorm Warning | LIX | Jefferson, Lafourche, Plaquemines, Saint Bernard | 38 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 9.7 hours before the alert went out and 15 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
- 1167 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 666 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 340 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 5.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 11, 6:05 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Concordia, East Baton Rouge and 10 more | 85 min |
| Feb 11, 6:56 PM CST | Tornado Watch | SPC | Ascension, Assumption, Catahoula, Concordia, East Baton Rouge, East Feliciana and 17 more | 8 hr |
| Feb 11, 7:44 PM CST | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 12 more | 91 min |
| Feb 11, 11:19 PM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 7 more | 86 min |
| Feb 12, 1:41 AM CST | Tornado Watch | SPC | George, Greene, Perry, Stone, Wayne | 7 hr |
| Feb 12, 4:16 AM CST | Mesoscale Discussion | SPC | Jackson | 2 hr |
Nearby
Tornado Watches in Louisiana, 2024Tornado Watches in Mississippi, 2024Every tornado watch in 2024
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.