Alert archive / Louisiana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 69, NWS New Orleans, LA

May 23, 2026Jefferson Parish, Lafourche Parish, Saint Charles Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 23, 2026, 4:13 AM CDT for Jefferson Parish, Lafourche Parish, Saint Charles Parish, Louisiana. It was in force for 47 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, 2026, 4:13 AM CDT (09:13 UTC)
Expired
May 23, 2026, 5:00 AM CDT
In force
47 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Jefferson Parish, LA, Lafourche Parish, LA, Saint Charles Parish, LA

The radar

The Hammond radar (KHDC), 92 km from the middle of the area, began a volume at 09:15 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

Jackson, MS (KJAN), launched 00:00Z, 9.2 hours before the alert went out and 292 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 00:00Z on 2026-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 910 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 2026-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.19395878Sfc1 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
910 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1408 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.7

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 May 22, 6:45 PM CDT, 9 hours 28 minutes earlier.

Area forecast discussion, May 22, 6:45 PM CDT, 9 hours 28 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 7:49 PM CDTSpecial Weather StatementLIXAssumption56 min
May 23, 4:04 AM CDTSpecial Weather StatementLIXLafourche41 min
May 23, 4:14 AM CDTSpecial Marine WarningLIX61 min
May 23, 4:56 AM CDTSpecial Weather StatementLIXSaint Charles34 min
May 23, 6:06 AM CDTSpecial Weather StatementLIXSt. Mary39 min
May 23, 6:45 AM CDTSpecial Weather StatementLIXTerrebonne45 min
May 23, 7:30 AM CDTSpecial Weather StatementLIXTerrebonne60 min
May 23, 8:11 AM CDTSpecial Weather StatementLIXLafourche64 min
May 23, 9:04 AM CDTFlood WatchLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more58 hr
May 23, 9:20 AM CDTRiver Flood WarningLIXSaint Tammany48 hr
May 23, 11:32 AM CDTSpecial Weather StatementLIXWest Feliciana43 min
May 23, 1:00 PM CDTSpecial Marine WarningLIX60 min
May 23, 1:56 PM CDTSpecial Marine WarningLIX64 min
May 23, 2:52 PM CDTSpecial Marine WarningLIX83 min
May 23, 4:09 PM CDTSpecial Marine WarningLIX84 min
May 23, 4:33 PM CDTSpecial Weather StatementLIXJefferson42 min
May 23, 5:16 PM CDTSpecial Marine WarningLIX46 min
May 23, 5:25 PM CDTSpecial Marine WarningLIX47 min
May 23, 6:58 PM CDTSpecial Weather StatementLIXPlaquemines47 min
May 22, 7:13 PM CDTSpecial Weather StatementLIXWilkinson32 min
May 22, 7:28 PM CDTRiver Flood WarningLIXHarrison32 hr
May 22, 7:48 PM CDTSpecial Weather StatementLIXWilkinson42 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2026Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.