Alert archive / Mississippi / Tornado Watches in 2025

Tornado Watch 21

March 4, 202534 parishes in Louisiana; 60 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 4, 2025, 12:22 PM CST for 34 parishes in Louisiana; 60 counties in Mississippi. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Mar 4, 2025, 12:22 PM CST (18:22 UTC)
Expired
Mar 4, 2025, 9:00 PM CST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
70 kt
All 94 counties

Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Franklin Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Lafayette Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Madison Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Grenada County, MS, Hancock County, MS, Harrison County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jackson County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Sunflower County, MS, Walthall County, MS, Warren County, MS, Washington County, MS, Wayne County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 59 km from the middle of the area, began a volume at 18:23 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
60%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
60%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 4, 12:27 PM CSTSevere Thunderstorm WarningLCHAvoyelles, Rapides33 min
Mar 4, 12:28 PM CSTTornado WarningLCHAvoyelles, Rapides9 min
Mar 4, 12:39 PM CSTSevere Thunderstorm WarningJANBolivar, Issaquena, Sharkey, Washington81 min
Mar 4, 12:40 PM CSTSevere Thunderstorm WarningJANMadison, Tensas80 min
Mar 4, 12:47 PM CSTSevere Thunderstorm WarningLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 2 more43 min
Mar 4, 1:24 PM CSTSevere Thunderstorm WarningJANAdams, Franklin, Jefferson81 min
Mar 4, 1:29 PM CSTSevere Thunderstorm WarningJANClaiborne, Warren76 min
Mar 4, 1:31 PM CSTSevere Thunderstorm WarningLCHAcadia, Evangeline, Jefferson Davis, Lafayette, Saint Landry44 min
Mar 4, 1:56 PM CSTSevere Thunderstorm WarningJANHinds, Madison, Yazoo79 min
Mar 4, 1:57 PM CSTSevere Thunderstorm WarningLCHAvoyelles18 min
Mar 4, 2:00 PM CSTTornado WarningJANClaiborne, Jefferson19 min
Mar 4, 2:04 PM CSTSevere Thunderstorm Warning Destructive damage threatLIXPointe Coupee, West Feliciana41 min
Mar 4, 2:13 PM CSTSevere Thunderstorm WarningLCHAcadia, Avoyelles, Lafayette, Saint Landry, Saint Martin, Vermilion47 min
Mar 4, 2:17 PM CSTSevere Thunderstorm WarningJANCopiah, Franklin, Lincoln73 min
Mar 4, 2:45 PM CSTSevere Thunderstorm Warning Considerable damage threatLIXEast Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Baton Rouge, West Feliciana60 min
Mar 4, 2:45 PM CSTSevere Thunderstorm WarningJANHinds, Madison, Rankin75 min
Mar 4, 3:05 PM CSTSevere Thunderstorm WarningJANJefferson Davis, Lawrence, Simpson70 min
Mar 4, 3:14 PM CSTTornado WarningLIXAmite, Pike, Walthall46 min
Mar 4, 3:16 PM CSTSevere Thunderstorm WarningJANCopiah, Franklin, Lincoln44 min
Mar 4, 3:21 PM CSTSevere Thunderstorm WarningJANLeake, Scott, Smith69 min
Mar 4, 4:05 PM CSTSevere Thunderstorm Warning Considerable damage threatLIXSaint Helena, Tangipahoa, Washington55 min
Mar 4, 4:05 PM CSTTornado WarningJANJefferson Davis, Lawrence, Marion37 min
Mar 4, 4:07 PM CSTSevere Thunderstorm WarningJANJefferson Davis, Lawrence, Simpson68 min
Mar 4, 4:13 PM CSTSevere Thunderstorm WarningJANMarion77 min
Mar 4, 4:14 PM CSTSevere Thunderstorm WarningLCHIberia, Saint Martin, St. Mary46 min
Mar 4, 4:40 PM CSTSevere Thunderstorm WarningJANCovington63 min
Mar 4, 4:52 PM CSTTornado WarningLIXAscension, Assumption, Livingston, Saint James23 min
Mar 4, 4:53 PM CSTSevere Thunderstorm WarningJANSmith38 min
Mar 4, 5:15 PM CSTSevere Thunderstorm WarningJANForrest, Lamar, Marion75 min
Mar 4, 5:18 PM CSTTornado WarningLIXAscension, Saint James, Saint John the Baptist, Tangipahoa27 min
Mar 4, 5:20 PM CSTSevere Thunderstorm WarningJANCovington, Jones70 min
Mar 4, 5:52 PM CSTSevere Thunderstorm WarningJANClarke, Jasper68 min
Mar 4, 5:54 PM CSTSevere Thunderstorm WarningMOBGreene, Perry, Wayne66 min
Mar 4, 5:58 PM CSTSevere Thunderstorm WarningJANKemper, Lauderdale, Newton77 min
Mar 4, 6:02 PM CSTSevere Thunderstorm WarningJANForrest59 min
Mar 4, 6:05 PM CSTSevere Thunderstorm WarningLIXSaint Tammany, Washington40 min
Mar 4, 6:17 PM CSTSevere Thunderstorm WarningMOBGreene, Perry58 min
Mar 4, 6:19 PM CSTTornado WarningJANClarke30 min
Mar 4, 6:26 PM CSTTornado WarningMOBWayne34 min
Mar 4, 6:31 PM CSTSevere Thunderstorm WarningMOBWayne29 min
Mar 4, 6:31 PM CSTSevere Thunderstorm WarningMOBGeorge, Greene, Perry, Stone59 min
Mar 4, 6:34 PM CSTTornado WarningMOBGreene, Perry, Wayne41 min
Mar 4, 6:48 PM CSTSevere Thunderstorm WarningLIXHancock, Harrison, Pearl River27 min
Mar 4, 6:55 PM CSTSevere Thunderstorm WarningLIXOrleans, Saint Tammany50 min
Mar 4, 6:57 PM CSTSevere Thunderstorm WarningMOBGreene, Wayne63 min
Mar 4, 7:10 PM CSTSevere Thunderstorm WarningLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard80 min
Mar 4, 7:14 PM CSTSevere Thunderstorm WarningMOBGeorge, Greene, Perry, Stone61 min
Mar 4, 7:19 PM CSTTornado WarningLIXPlaquemines, Saint Bernard19 min
Mar 4, 7:55 PM CSTTornado WarningMOBGeorge35 min
Mar 4, 8:07 PM CSTSevere Thunderstorm WarningMOBGeorge53 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, 6.4 hours before the alert went out and 67 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2025-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2025-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1142 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

936 
WWUS20 KWNS 041820
SEL1  
SPC WW 041820
LAZ000-MSZ000-CWZ000-050100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 21
NWS Storm Prediction Center Norman OK
1220 PM CST Tue Mar 4 2025

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Eastern and Southeastern Louisiana
  Central and Southern Mississippi
  Coastal Waters

* Effective this Tuesday afternoon and evening from 1220 PM until
  700 PM CST.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered damaging winds and isolated significant gusts to 80
    mph likely
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...A line of strong to severe thunderstorms continues to push
eastward towards eastern/southern LA along a progressive cold front.
The environment ahead of this front across eastern/southern LA and
into much of central and southern MS will become increasingly
favorable for continued severe thunderstorms over the next several
hours. Tornadoes are the primary severe hazard, with a few strong
(i.e. EF2+) tornadoes possible. Strong to potentially significant
(i.e. over 74 mph) wind gusts are possible within this line as well.

The tornado watch area is approximately along and 90 statute miles
east and west of a line from 15 miles east northeast of Greenwood MS
to 35 miles south southeast of Houma LA. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU1).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 20...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.

...Mosier

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 4, 4:13 AM CSTTornado WatchSPCHoward, Little River, Miller, Polk, Scott, Sevier6 hr
Mar 4, 6:22 AM CSTMesoscale DiscussionSPCBenton, Crawford, Scott, Sebastian, Washington2 hr
Mar 4, 6:43 AM CSTSevere Thunderstorm WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 5 more3 hr
Mar 4, 7:49 AM CSTMesoscale DiscussionSPCColumbia, Hempstead, Lafayette, Little River, Miller, Nevada and 2 more116 min
Mar 4, 8:13 AM CSTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 16 more7 hr
Mar 4, 8:56 AM CSTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more94 min
Mar 4, 10:17 AM CSTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 9 more88 min
Mar 4, 11:49 AM CSTMesoscale DiscussionSPCChicot116 min
Mar 4, 2:14 PM CSTMesoscale DiscussionSPCAcadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 23 more91 min
Mar 4, 5:36 PM CSTMesoscale DiscussionSPCJefferson, Orleans, Saint Charles, Saint John the Baptist, Saint Tammany114 min

Nearby

Tornado Watches in Mississippi, 2025Tornado Watches in Louisiana, 2025Every tornado watch in 2025

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.