Alert archive / Louisiana / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 37, NWS New Orleans, LA

March 24, 2025Lafourche Parish, Saint Charles Parish, Terrebonne Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 24, 2025, 10:22 AM CDT for Lafourche Parish, Saint Charles Parish, Terrebonne Parish, Louisiana. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 24, 2025, 10:22 AM CDT (15:22 UTC)
Expired: Mar 24, 2025, 11:00 AM CDT
In force: 38 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lafourche Parish, LA, Saint Charles Parish, LA, Terrebonne Parish, LA

The radar

The Hammond radar (KHDC), 105 km from the middle of the area, began a volume at 15:23 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.

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 24, 6:27 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.4 hours before the alert went out and 109 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: 1188 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 590 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 24, 7:58 AM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Mar 24, 7:58 AM CDT, 2 hours 24 minutes before

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In the hours before

Special weather statement, Mar 24, 8:57 AM CDT, 1 hour 25 minutes before

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Special weather statement, Mar 24, 9:02 AM CDT, 1 hour 20 minutes before

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Special weather statement, Mar 24, 9:11 AM CDT, 1 hour 11 minutes before

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Special weather statement, Mar 24, 9:36 AM CDT, 46 minutes before

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Special weather statement, Mar 24, 9:43 AM CDT, 39 minutes before

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Special weather statement, Mar 24, 9:56 AM CDT, 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 24, 6:47 AM CDT	Severe Thunderstorm Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge	43 min
Mar 24, 6:52 AM CDT	Special Weather Statement	LIX	Washington	23 min
Mar 24, 7:00 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, West Baton Rouge	6 days
Mar 24, 7:06 AM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Baton Rouge, West Feliciana	39 min
Mar 24, 7:14 AM CDT	Wind Advisory	LIX	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 13 more	8 hr
Mar 24, 7:18 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, West Baton Rouge	42 min
Mar 24, 7:22 AM CDT	Special Weather Statement	LIX	Livingston	38 min
Mar 24, 7:25 AM CDT	Special Weather Statement	LIX	East Feliciana, West Feliciana	35 min
Mar 24, 7:44 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena	32 min
Mar 24, 7:56 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Saint Helena, Saint James, Saint John the Baptist, Tangipahoa	38 min
Mar 24, 7:57 AM CDT	Special Marine Warning	LIX		63 min
Mar 24, 8:01 AM CDT	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	32 min
Mar 24, 8:15 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	45 min
Mar 24, 8:23 AM CDT	Severe Thunderstorm Warning	LIX	Saint John the Baptist, Saint Tammany, Tangipahoa	40 min
Mar 24, 8:40 AM CDT	Special Marine Warning	LIX		65 min
Mar 24, 9:02 AM CDT	Special Weather Statement	LIX	Orleans	28 min
Mar 24, 9:36 AM CDT	Special Weather Statement	LIX	Assumption	24 min
Mar 24, 9:39 AM CDT	Special Marine Warning	LIX		46 min
Mar 24, 9:43 AM CDT	Special Weather Statement	LIX	Assumption	32 min
Mar 24, 9:56 AM CDT	Special Weather Statement	LIX	Saint Charles	34 min
Mar 24, 9:58 AM CDT	Special Marine Warning	LIX		42 min
Mar 24, 10:05 AM CDT	Gale Warning	LIX		6 hr
Mar 24, 10:09 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	34 min
Mar 24, 10:36 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles	39 min
Mar 24, 11:03 AM CDT	Special Weather Statement	LIX	Saint Bernard	42 min
Mar 24, 3:55 PM CDT	Small Craft Advisory	LIX		7 hr
Mar 24, 8:57 AM CDT	Special Weather Statement	LIX	Hancock	48 min
Mar 24, 9:11 AM CDT	Special Weather Statement	LIX	Hancock, Harrison	34 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2025 Every severe thunderstorm warning 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.