Alert archive / Louisiana / Tornado Watches in 2024

Tornado Watch 718

December 28, 202447 parishes in Louisiana; 24 counties in Mississippi; 17 counties in Texas

The Storm Prediction Center issued this tornado watch at Dec 28, 2024, 7:38 AM CST for 47 parishes in Louisiana; 24 counties in Mississippi; 17 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Dec 28, 2024, 7:38 AM CST (13:38 UTC)
Expired: Dec 28, 2024, 3:00 PM CST
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 88 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Iberville Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Livingston Parish, LA, Madison 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, Saint Martin Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, Washington Parish, LA, Webster Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Winn Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hancock County, MS, Hinds County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS, Angelina County, TX, Cherokee County, TX, Gregg County, TX, Hardin County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Trinity County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 41 km from the middle of the area, began a volume at 13:41 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: 70%
One or more EF2 to EF5 tornadoes: 50%
Ten or more severe wind reports: 50%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

37 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Dec 28, 7:41 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	49 min
Dec 28, 7:49 AM CST	Severe Thunderstorm Warning	LCH	Rapides	26 min
Dec 28, 7:49 AM CST	Severe Thunderstorm Warning	JAN	Claiborne, Franklin, Jefferson	41 min
Dec 28, 7:56 AM CST	Severe Thunderstorm Warning	SHV	Grant, LaSalle, Winn	28 min
Dec 28, 8:04 AM CST	Tornado Warning	LCH	Rapides	26 min
Dec 28, 8:07 AM CST	Tornado Warning	LCH	Beauregard	38 min
Dec 28, 8:29 AM CST	Severe Thunderstorm Warning	LCH	Rapides	15 min
Dec 28, 9:24 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Claiborne, Webster	25 min
Dec 28, 9:31 AM CST	Severe Thunderstorm Warning	SHV	Cass, Harrison, Marion, Morris, Upshur	44 min
Dec 28, 10:14 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Caddo	46 min
Dec 28, 11:01 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Caddo, Claiborne, Webster	44 min
Dec 28, 11:07 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	53 min
Dec 28, 11:46 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Claiborne, Webster	44 min
Dec 28, 11:51 AM CST	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River, Webster	46 min
Dec 28, 12:59 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Tyler	46 min
Dec 28, 1:05 PM CST	Tornado Warning	LCH	Hardin, Tyler	25 min
Dec 28, 1:10 PM CST	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	65 min
Dec 28, 1:11 PM CST	Severe Thunderstorm Warning	HGX	Liberty, Polk	34 min
Dec 28, 1:18 PM CST	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, San Augustine	42 min
Dec 28, 1:28 PM CST	Tornado Warning	LCH	Jasper, Tyler	32 min
Dec 28, 1:31 PM CST	Severe Thunderstorm Warning	HGX	Houston, Madison, Trinity, Walker	44 min
Dec 28, 1:40 PM CST	Severe Thunderstorm Warning	SHV	Angelina, Cherokee, Nacogdoches, Rusk	50 min
Dec 28, 1:43 PM CST	Severe Thunderstorm Warning	LCH	Hardin, Tyler	47 min
Dec 28, 2:02 PM CST	Tornado Warning	SHV	Grant, Winn	28 min
Dec 28, 2:05 PM CST	Severe Thunderstorm Warning	SHV	Sabine	32 min
Dec 28, 2:13 PM CST	Tornado Warning	LCH	Jasper, Newton	47 min
Dec 28, 2:16 PM CST	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	44 min
Dec 28, 2:33 PM CST	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Sabine	30 min
Dec 28, 2:35 PM CST	Tornado Warning	LIX	Amite, Wilkinson	40 min
Dec 28, 2:35 PM CST	Severe Thunderstorm Warning	HGX	Polk, San Jacinto	40 min
Dec 28, 2:45 PM CST	Severe Thunderstorm Warning	SHV	Caldwell, LaSalle	29 min
Dec 28, 2:47 PM CST	Tornado Warning	SHV	Caldwell	29 min
Dec 28, 2:48 PM CST	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	42 min
Dec 28, 2:51 PM CST	Tornado Warning	SHV	Caldwell, LaSalle	24 min
Dec 28, 2:56 PM CST	Tornado Warning	JAN	Catahoula, Franklin	64 min
Dec 28, 2:58 PM CST	Severe Thunderstorm Warning	LCH	Vernon	62 min
Dec 28, 2:58 PM CST	Tornado Warning	JAN	Franklin, Lincoln	52 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 (KSHV), launched 12:00Z, 1.6 hours before the alert went out and 148 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1542 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 28, 6:25 AM CST	Mesoscale Discussion	SPC	Bienville, Caddo, De Soto, Grant, Jackson, LaSalle and 6 more	2 hr
Dec 28, 6:49 AM CST	Mesoscale Discussion	SPC	Ascension, Concordia, East Baton Rouge, East Feliciana, Iberville, Livingston and 11 more	116 min
Dec 28, 9:33 AM CST	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Avoyelles, Beauregard, Bienville and 34 more	117 min
Dec 28, 10:24 AM CST	Mesoscale Discussion	SPC	Bossier, Caddo, Claiborne, Lincoln, Morehouse, Union and 2 more	96 min
Dec 28, 11:47 AM CST	Mesoscale Discussion	SPC	Allen, Beauregard, Calcasieu, Sabine, Vernon	88 min
Dec 28, 1:34 PM CST	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 23 more	86 min
Dec 28, 2:17 PM CST	Tornado Watch PDS	SPC	Acadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 40 more	8 hr
Dec 28, 3:17 PM CST	Mesoscale Discussion	SPC	Caldwell, Catahoula, East Carroll, Franklin, Grant, LaSalle and 7 more	58 min
Dec 28, 3:46 PM CST	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 12 more	89 min
Dec 28, 11:15 AM CST	Mesoscale Discussion	SPC	Bolivar, Coahoma, Grenada, Leflore, Panola, Quitman and 6 more	60 min
Dec 28, 3:56 PM CST	Mesoscale Discussion	SPC	Amite, Copiah, Franklin, Hinds, Jefferson Davis, Lawrence and 8 more	64 min
Dec 28, 4:46 AM CST	Mesoscale Discussion	SPC	Bowie, Camp, Cass, Collin, Dallas, Delta and 16 more	89 min
Dec 28, 5:23 AM CST	Severe Thunderstorm Watch	SPC	Bosque, Bowie, Camp, Cass, Collin, Dallas and 31 more	9 hr
Dec 28, 7:38 AM CST	Mesoscale Discussion	SPC	Bosque, Bowie, Camp, Cass, Ellis, Franklin and 14 more	67 min
Dec 28, 8:38 AM CST	Mesoscale Discussion	SPC	Anderson, Bastrop, Bell, Blanco, Brazos, Burleson and 16 more	97 min
Dec 28, 10:16 AM CST	Tornado Watch	SPC	Anderson, Bell, Brazos, Burleson, Chambers, Falls and 13 more	7 hr

Nearby

Tornado Watches in Louisiana, 2024 Tornado Watches in Mississippi, 2024 Tornado Watches in Texas, 2024 Every 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; radar from the NEXRAD Level II archive.