Alert archive / Louisiana / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 101, NWS New Orleans, LA

May 23, 2025East Baton Rouge Parish, Livingston Parish, West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 23, 2025, 5:40 PM CDT for East Baton Rouge Parish, Livingston Parish, West Baton Rouge Parish, Louisiana. It was in force for 35 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: May 23, 2025, 5:40 PM CDT (22:40 UTC)
Expired: May 23, 2025, 6:15 PM CDT
In force: 35 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties East Baton Rouge Parish, LA, Livingston Parish, LA, West Baton Rouge Parish, LA

The radar

The Hammond radar (KHDC), 61 km from the middle of the area, began a volume at 22:43 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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.7 hours before the alert went out and 132 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: 1933 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 May 23, 2:41 PM CDT, 2 hours 59 minutes earlier.

Area forecast discussion, May 23, 2:41 PM CDT, 2 hours 59 minutes before

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In the hours before

Special weather statement, May 23, 4:39 PM CDT, 1 hour 1 minute before

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Special weather statement, May 23, 4:59 PM CDT, 41 minutes before

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Special weather statement, May 23, 5:05 PM CDT, 35 minutes before

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Special weather statement, May 23, 5:17 PM CDT, 23 minutes before

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Special weather statement, May 23, 5:21 PM CDT, 19 minutes before

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Special weather statement, May 23, 5:27 PM CDT, 13 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
May 22, 7:37 PM CDT	Special Weather Statement	LIX	Iberville	38 min
May 23, 1:02 PM CDT	Special Weather Statement	LIX	Orleans	28 min
May 23, 1:04 PM CDT	Special Weather Statement	LIX	Saint Bernard	26 min
May 23, 1:33 PM CDT	Special Weather Statement	LIX	Orleans	42 min
May 23, 1:34 PM CDT	Special Weather Statement	LIX	Saint Bernard	41 min
May 23, 2:13 PM CDT	Special Weather Statement	LIX	Terrebonne	47 min
May 23, 2:18 PM CDT	Special Weather Statement	LIX	Terrebonne	42 min
May 23, 2:51 PM CDT	Special Weather Statement	LIX	Lafourche	39 min
May 23, 2:52 PM CDT	Special Weather Statement	LIX	Jefferson	53 min
May 23, 3:17 PM CDT	Special Weather Statement	LIX	Saint Charles	43 min
May 23, 3:52 PM CDT	Special Weather Statement	LIX	Ascension, Saint James, Saint John the Baptist	38 min
May 23, 4:03 PM CDT	Special Marine Warning	LIX		42 min
May 23, 4:30 PM CDT	Special Weather Statement	LIX	Ascension	30 min
May 23, 4:34 PM CDT	Special Weather Statement	LIX	Washington	26 min
May 23, 4:35 PM CDT	Special Weather Statement	LIX	Jefferson	25 min
May 23, 4:39 PM CDT	Special Weather Statement	LIX	Tangipahoa	36 min
May 23, 4:58 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa	26 min
May 23, 4:59 PM CDT	Special Weather Statement	LIX	East Baton Rouge	31 min
May 23, 5:05 PM CDT	Special Weather Statement	LIX	Washington	25 min
May 23, 5:17 PM CDT	Special Weather Statement	LIX	Tangipahoa	28 min
May 23, 5:21 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche	24 min
May 23, 5:27 PM CDT	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	33 min
May 23, 5:49 PM CDT	Special Weather Statement	LIX	Tangipahoa	26 min
May 23, 5:51 PM CDT	Special Weather Statement	LIX	Jefferson	24 min
May 23, 6:18 PM CDT	Areal Flood Advisory	LIX	East Baton Rouge	3 hr
May 23, 6:20 PM CDT	Special Weather Statement	LIX	East Baton Rouge	25 min
May 23, 6:22 PM CDT	Special Marine Warning	LIX		83 min
May 23, 6:43 PM CDT	Special Weather Statement	LIX	West Feliciana	32 min
May 23, 6:48 PM CDT	Severe Thunderstorm Warning	LIX	West Feliciana	27 min
May 23, 1:08 PM CDT	Special Weather Statement	LIX	Hancock	37 min
May 23, 5:45 PM CDT	Special Weather Statement	LIX	Pearl River	30 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.