Alert archive / Louisiana / Tornado Watches in 2022
Tornado Watch 585
The Storm Prediction Center issued this tornado watch at Dec 13, 2022, 9:33 PM CST for 18 parishes in Louisiana; 4 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 13, 2022, 9:33 PM CST (03:33 UTC)
- Expired
- Dec 14, 2022, 6:00 AM CST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 22 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, Winn Parish, LA, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX
The radar
The Ft Polk radar (KPOE), 48 km from the middle of the area, began a volume at 03:35 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
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 10:21 PM CST | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Winn | 54 min |
| Dec 13, 10:31 PM CST | Tornado Warning | LCH | Allen | 29 min |
| Dec 13, 10:42 PM CST | Flash Flood Warning | LCH | Jasper, Newton, Tyler | 4 hr |
| Dec 13, 10:51 PM CST | Tornado Warning | LCH | Allen, Rapides | 24 min |
| Dec 13, 11:14 PM CST | Tornado Warning | LCH | Rapides | 16 min |
| Dec 14, 12:04 AM CST | Tornado Warning | LCH | Rapides | 13 min |
| Dec 14, 12:13 AM CST | Tornado Warning | SHV | LaSalle | 32 min |
| Dec 14, 1:04 AM CST | Tornado Warning | LCH | Avoyelles, Rapides | 12 min |
| Dec 14, 1:13 AM CST | Flash Flood Warning | LCH | Allen, Avoyelles, Rapides | 3 hr |
| Dec 14, 1:43 AM CST | Severe Thunderstorm Warning | LCH | Avoyelles, Rapides | 32 min |
| Dec 14, 2:10 AM CST | Tornado Warning | LCH | Avoyelles | 34 min |
| Dec 14, 2:54 AM CST | Flash Flood Warning | LCH | Allen, Calcasieu, Jefferson Davis | 4 hr |
| Dec 14, 3:05 AM CST | Tornado Warning | LCH | Avoyelles | 55 min |
| Dec 14, 3:35 AM CST | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Saint Landry | 3 hr |
| Dec 14, 4:25 AM CST | Flash Flood Warning | LCH | Acadia, Allen, Calcasieu, Evangeline, Jefferson Davis | 2 hr |
| Dec 14, 4:56 AM CST | Tornado Warning | LCH | Calcasieu, Jefferson Davis | 34 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.6 hours before the alert went out and 96 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
- 1522 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 260 m²/s²
- 0-3 km storm-relative helicity
- 303 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 14.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 6:25 PM CST | Tornado Watch | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more | 8 hr |
| Dec 13, 7:06 PM CST | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Caldwell, Catahoula, Concordia and 12 more | 114 min |
| Dec 13, 8:31 PM CST | Mesoscale Discussion | SPC | Caldwell, Catahoula, Concordia, East Carroll, Franklin, LaSalle and 6 more | 119 min |
| Dec 13, 8:48 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 15 more | 87 min |
| Dec 13, 11:05 PM CST | Mesoscale Discussion | SPC | East Feliciana, Saint Helena, West Feliciana | 115 min |
| Dec 13, 11:42 PM CST | Tornado Watch | SPC | Catahoula, Concordia, East Feliciana, Franklin, Madison, Pointe Coupee and 2 more | 6 hr |
| Dec 14, 2:13 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Calcasieu, Cameron, Catahoula and 12 more | 2 hr |
| Dec 14, 4:52 AM CST | Mesoscale Discussion | SPC | Acadia, Ascension, East Baton Rouge, East Feliciana, Iberville, Lafayette and 11 more | 83 min |
| Dec 14, 5:55 AM CST | Tornado Watch | SPC | Acadia, Ascension, Assumption, Cameron, East Baton Rouge, East Feliciana and 19 more | 7 hr |
| Dec 14, 9:47 AM CST | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 16 more | 118 min |
| Dec 14, 11:37 AM CST | Mesoscale Discussion | SPC | Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena and 6 more | 113 min |
| Dec 14, 12:22 PM CST | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 17 more | 10 hr |
| Dec 14, 1:20 PM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, Livingston, Orleans, Saint Charles and 7 more | 85 min |
| Dec 14, 2:53 PM CST | Mesoscale Discussion | SPC | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 3 more | 97 min |
| Dec 14, 4:35 PM CST | Mesoscale Discussion | SPC | Jefferson, Saint Bernard | 115 min |
Nearby
Tornado Watches in Louisiana, 2022Tornado Watches in Texas, 2022Every tornado watch in 2022
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.