Alert archive / Louisiana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 21, NWS New Orleans, LA

March 11, 20266 parishes in Louisiana; Pearl River County, Walthall County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 11, 2026, 9:00 PM CDT for 6 parishes in Louisiana; Pearl River County, Walthall County, Mississippi. It was in force for 60 min. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 11, 2026, 9:00 PM CDT (02:00 UTC)
Expired: Mar 11, 2026, 10:00 PM CDT
In force: 60 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Livingston Parish, LA, Saint Helena Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Pearl River County, MS, Walthall County, MS

The radar

The Hammond radar (KHDC), 29 km from the middle of the area, began a volume at 01:58 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 was reported inside it

Time	Report	Where	Remark
Mar 11, 9:03 PM CDT	TORNADO	2 Wsw Franklinton, LA	Corrects previous tornado report from 1 SSW Franklinton. An NWS storm survey confirmed an EF-1 tornado touched down near LA Hwy 16 south of Franklinton, LA in Washington Parish.
Mar 11, 9:07 PM CDT	TSTM WND DMG	1 Ssw Franklinton, LA	Emergency management reported roof blown off Florist Shop in Franklinton. Possible tornado. Time estimated by radar.
Mar 11, 9:07 PM CDT	TSTM WND DMG	1 Ssw Franklinton, LA	Emergency management reports windows blown out of a business in southern parts of Franklinton. Possible tornado. Time estimated by radar.
Mar 11, 9:07 PM CDT	TORNADO	1 Ssw Franklinton, LA	An NWS storm survey confirmed an EF-1 tornado touched down near LA Hwy 16 south of Franklinton, LA in Washington Parish.
Mar 11, 9:09 PM CDT	TSTM WND DMG	5 Ssw Robert, LA	Public reported trees down on North Thibodeaux road south of Robert, LA. Time estimated by radar.
Mar 11, 9:21 PM CDT	TORNADO	6 Ese Folsom, LA	Corrects previous tornado report from 6 ESE Folsom. An NWS storm survey confirmed an EF-0 tornado touched down near Blond, LA and LA Hwy 40.
Mar 11, 9:22 PM CDT	TORNADO	6 Ese Folsom, LA	An NWS storm survey confirmed an EF-0 tornado touched down near Blond, LA and LA Hwy 40.
Mar 11, 9:28 PM CDT	TORNADO	8 W Bush, LA	An NWS storm survey confirmed an EF-0 tornado touched down in north St. Tammany Parish near Hwy 1082 and Elderberry Ln.
Mar 11, 9:35 PM CDT	TSTM WND DMG	1 Ene Sun, LA	Emergency management reported doors of a general store blown open and stock scattered inside. Possible tornado. Time estimated by radar.
Mar 11, 9:35 PM CDT	TSTM WND DMG	2 W Mandeville, LA	Tree, minor roof and window damage along Holly Street in Mandeville.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 11, 6:56 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.0 hours before the alert went out and 296 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: 2 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 758 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: -226 m²/s²
0-3 km storm-relative helicity: -63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

605 
WUUS54 KLIX 120200
SVRLIX
LAC063-091-095-103-105-117-MSC109-147-120300-
/O.NEW.KLIX.SV.W.0021.260312T0200Z-260312T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
900 PM CDT Wed Mar 11 2026

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Northeastern St. John The Baptist Parish in southeastern
  Louisiana...
  Southeastern St. Helena Parish in southeastern Louisiana...
  Northwestern St. Tammany Parish in southeastern Louisiana...
  Northeastern Livingston Parish in southeastern Louisiana...
  Tangipahoa Parish in southeastern Louisiana...
  Washington Parish in southeastern Louisiana...
  Southern Walthall County in southern Mississippi...
  Northwestern Pearl River County in southern Mississippi...

* Until 1000 PM CDT.

* At 900 PM CDT, severe thunderstorms were located along a line
  extending from 7 miles southwest of Dexter to near Springfield,
  moving east at 35 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Hammond, Bogalusa, Mandeville, Covington, Franklinton, Amite,
  Ponchatoula, Amite City, Abita Springs, Livingston, Independence,
  Tylertown, Varnado, Roseland, Albany, Madisonville, Folsom,
  Springfield, Sun, and Enon.

This includes the following Interstates...
 Interstate 12 between mile markers 20 and 66.
 Interstate 55 in Louisiana between mile markers 10 and 50.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

A Tornado Watch remains in effect until 200 AM CDT for southeastern
Louisiana...and southern Mississippi.

&&

LAT...LON 3103 8984 3100 8983 3100 8977 3092 8954
      3033 9011 3036 9019 3018 9039 3025 9046
      3028 9044 3032 9047 3031 9049 3049 9083
      3100 9030 3100 9026 3104 9026 3119 9007
TIME...MOT...LOC 0200Z 283DEG 31KT 3099 9008 3038 9058 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

HRL

2 follow-up statements

360 
WWUS54 KLIX 120230
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
930 PM CDT Wed Mar 11 2026

LAC091-120239-
/O.CAN.KLIX.SV.W.0021.000000T0000Z-260312T0300Z/
St. Helena LA-
930 PM CDT Wed Mar 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. HELENA PARISH
IS CANCELLED...

The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 200 AM CDT for southeastern
Louisiana...and southern Mississippi.

&&

LAT...LON 3100 8983 3100 8977 3092 8954 3033 9011
      3036 9019 3018 9039 3025 9046 3028 9044
      3032 9047 3031 9049 3039 9061 3051 9026
      3078 9011 3111 8996
TIME...MOT...LOC 0229Z 283DEG 31KT 3093 8980 3033 9031 

$$

LAC063-095-103-105-117-MSC109-147-120300-
/O.CON.KLIX.SV.W.0021.000000T0000Z-260312T0300Z/
St. John The Baptist LA-St. Tammany LA-Livingston LA-Tangipahoa LA-
Washington LA-Walthall MS-Pearl River MS-
930 PM CDT Wed Mar 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHEASTERN ST. JOHN THE BAPTIST...NORTHWESTERN ST. TAMMANY...
EAST CENTRAL LIVINGSTON...SOUTHERN TANGIPAHOA AND EASTERN WASHINGTON
PARISHES...SOUTHEASTERN WALTHALL AND NORTHWESTERN PEARL RIVER
COUNTIES...

At 929 PM CDT, severe thunderstorms were located along a line
extending from near Varnado to 9 miles southwest of Madisonville,
moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Bogalusa, Mandeville, Covington, Ponchatoula, Abita Springs, Varnado,
Madisonville, Folsom, Springfield, Sun, Enon, Crossroads, Bush,
Killian, Angie, and W Lk Pontchartrain Buoy.

This includes the following Interstates...
 Interstate 12 between mile markers 47 and 66.
 Interstate 55 in Louisiana between mile markers 10 and 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CDT for southeastern
Louisiana...and southern Mississippi.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3100 8983 3100 8977 3092 8954 3033 9011
      3036 9019 3018 9039 3025 9046 3028 9044
      3032 9047 3031 9049 3039 9061 3051 9026
      3078 9011 3111 8996
TIME...MOT...LOC 0229Z 283DEG 31KT 3093 8980 3033 9031 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

HRL

604 
WWUS54 KLIX 120248
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
948 PM CDT Wed Mar 11 2026

LAC063-095-105-MSC147-120258-
/O.CAN.KLIX.SV.W.0021.000000T0000Z-260312T0300Z/
St. John The Baptist LA-Livingston LA-Tangipahoa LA-Walthall MS-
948 PM CDT Wed Mar 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ST. JOHN THE
BAPTIST...EAST CENTRAL LIVINGSTON...SOUTHERN TANGIPAHOA PARISHES IN
SOUTHEASTERN LOUISIANA AND SOUTHEASTERN WALTHALL COUNTIES IS
CANCELLED...

The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.

A Tornado Watch remains in effect until 200 AM CDT for southeastern
Louisiana...and southern Mississippi.

&&

LAT...LON 3092 8954 3034 9010 3036 9019 3037 9017
      3040 9012 3062 8998 3100 8983 3100 8977
TIME...MOT...LOC 0248Z 283DEG 31KT 3089 8962 3029 9013 

$$

LAC103-117-MSC109-120300-
/O.CON.KLIX.SV.W.0021.000000T0000Z-260312T0300Z/
St. Tammany LA-Washington LA-Pearl River MS-
948 PM CDT Wed Mar 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHWESTERN ST. TAMMANY...EASTERN WASHINGTON PARISHES IN
SOUTHEASTERN LOUISIANA AND NORTHWESTERN PEARL RIVER COUNTIES...

At 948 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Poplarville to 6 miles south of
Mandeville, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Bogalusa, Mandeville, Abita Springs, Varnado, Sun, Bush, Crossroads,
and Angie.

This includes Interstate 12 between mile markers 63 and 66.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CDT for southeastern
Louisiana...and southern Mississippi.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3092 8954 3034 9010 3036 9019 3037 9017
      3040 9012 3062 8998 3100 8983 3100 8977
TIME...MOT...LOC 0248Z 283DEG 31KT 3089 8962 3029 9013 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

HRL

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 11, 7:15 PM CDT	Tornado Warning	LIX	Pointe Coupee, West Feliciana	30 min
Mar 11, 7:28 PM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	47 min
Mar 11, 7:32 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Feliciana	43 min
Mar 11, 7:38 PM CDT	Tornado Warning	LIX	Pointe Coupee, West Feliciana	12 min
Mar 11, 8:11 PM CDT	Tornado Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa	38 min
Mar 11, 8:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa, Washington	60 min
Mar 11, 8:20 PM CDT	Tornado Warning	LIX	Saint Helena, Tangipahoa	25 min
Mar 11, 8:43 PM CDT	Tornado Warning Tornado observed	LIX	Tangipahoa, Washington	20 min
Mar 11, 8:45 PM CDT	Tornado Warning	LIX	Tangipahoa	29 min
Mar 11, 8:57 PM CDT	Tornado Warning	LIX	Tangipahoa	33 min
Mar 11, 8:58 PM CDT	Tornado Warning	LIX	Tangipahoa	33 min
Mar 11, 9:00 PM CDT	Tornado Warning	LIX	Washington	45 min
Mar 11, 9:07 PM CDT	Areal Flood Advisory	LIX	East Baton Rouge, Livingston, West Baton Rouge	113 min
Mar 11, 9:10 PM CDT	Special Marine Warning	LIX		2 hr
Mar 11, 9:15 PM CDT	Tornado Warning	LIX	Saint Tammany	45 min
Mar 11, 9:31 PM CDT	Tornado Warning Tornado observed	LIX	Saint Tammany	29 min
Mar 11, 9:36 PM CDT	Tornado Warning	LIX	Saint Tammany, Washington	24 min
Mar 11, 9:36 PM CDT	Tornado Warning	LIX	Saint Tammany	39 min
Mar 11, 9:56 PM CDT	Tornado Warning	LIX	Saint Tammany	49 min
Mar 11, 10:14 PM CDT	Tornado Warning	LIX	Saint Tammany	31 min
Mar 11, 10:17 PM CDT	Wind Advisory	LIX	Jefferson, Orleans	12 hr
Mar 11, 10:34 PM CDT	Special Weather Statement	LIX	Saint Charles	41 min
Mar 11, 10:40 PM CDT	Gale Warning	LIX		11 hr
Mar 11, 10:40 PM CDT	Small Craft Advisory	LIX		20 hr
Mar 11, 10:43 PM CDT	Special Marine Warning	LIX		62 min
Mar 11, 10:47 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Tammany	43 min
Mar 11, 10:56 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Saint Bernard, Saint Charles	3 hr
Mar 11, 11:09 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Plaquemines, Saint Charles, Terrebonne	51 min
Mar 11, 11:54 PM CDT	Special Marine Warning	LIX		51 min
Mar 11, 11:56 PM CDT	Special Marine Warning	LIX		64 min
Mar 11, 11:58 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Plaquemines, Terrebonne	47 min
Mar 11, 11:59 PM CDT	Special Marine Warning	LIX		61 min
Mar 12, 12:01 AM CDT	Special Marine Warning	LIX		59 min
Mar 12, 12:30 AM CDT	Special Marine Warning	LIX		90 min
Mar 12, 1:00 AM CDT	Special Marine Warning	LIX		60 min
Mar 12, 1:54 AM CDT	Special Marine Warning	LIX		2 hr
Mar 11, 7:35 PM CDT	Tornado Warning	LIX	Amite, Pike	40 min
Mar 11, 7:57 PM CDT	Tornado Warning	LIX	Pike, Walthall	44 min
Mar 11, 10:04 PM CDT	Severe Thunderstorm Warning	LIX	Hancock, Pearl River	41 min
Mar 11, 10:22 PM CDT	Tornado Warning	LIX	Hancock, Pearl River	23 min
Mar 11, 10:59 PM CDT	Tornado Warning	LIX	Hancock, Harrison	12 min
Mar 11, 11:31 PM CDT	Tornado Warning	LIX	Jackson	29 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2026 Severe Thunderstorm Warnings in Mississippi, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.