Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 210, NWS New Orleans, LA

July 22, 20234 parishes in Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 22, 2023, 5:22 PM CDT for 4 parishes in Louisiana. It was in force for 51 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
Jul 22, 2023, 5:22 PM CDT (22:22 UTC)
Expired
Jul 22, 2023, 6:13 PM CDT
In force
51 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Livingston Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 22, 2:17 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.4 hours before the alert went out and 215 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 2023-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2243 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 12:00Z on 2023-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939Sfc1 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
2243 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.5

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 2:48 PM CDTSpecial Weather StatementLIXSaint Helena27 min
Jul 22, 3:53 PM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington52 min
Jul 22, 3:58 PM CDTSpecial Weather StatementLIXWest Feliciana32 min
Jul 22, 4:09 PM CDTSpecial Weather StatementLIXSaint Helena36 min
Jul 22, 4:14 PM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana31 min
Jul 22, 4:32 PM CDTSevere Thunderstorm WarningLIXSaint Tammany28 min
Jul 22, 4:42 PM CDTSpecial Weather StatementLIXPointe Coupee48 min
Jul 22, 4:59 PM CDTSpecial Weather StatementLIXSaint Tammany31 min
Jul 22, 5:03 PM CDTSevere Thunderstorm WarningLIXIberville, Pointe Coupee23 min
Jul 22, 5:05 PM CDTSpecial Weather StatementLIXTangipahoa25 min
Jul 22, 5:17 PM CDTSpecial Weather StatementLIXLivingston13 min
Jul 22, 5:24 PM CDTSpecial Marine WarningLIX96 min
Jul 22, 5:30 PM CDTSpecial Weather StatementLIXSaint Tammany30 min
Jul 22, 5:37 PM CDTSpecial Marine WarningLIX61 min
Jul 22, 6:01 PM CDTSpecial Weather StatementLIXSaint Tammany59 min
Jul 22, 6:11 PM CDTSpecial Marine WarningLIX52 min
Jul 22, 6:13 PM CDTSpecial Weather StatementLIXAscension, Saint John the Baptist47 min
Jul 22, 6:37 PM CDTSpecial Weather StatementLIXAssumption, Saint Charles, Saint James, Saint John the Baptist68 min
Jul 22, 6:54 PM CDTSpecial Weather StatementLIXOrleans51 min
Jul 22, 6:59 PM CDTSpecial Marine WarningLIX92 min
Jul 22, 1:43 PM CDTSpecial Weather StatementLIXPike32 min
Jul 22, 1:59 PM CDTSpecial Weather StatementLIXWalthall31 min
Jul 22, 3:30 PM CDTSpecial Weather StatementLIXPearl River30 min
Jul 22, 3:42 PM CDTSevere Thunderstorm WarningLIXWalthall33 min
Jul 22, 3:45 PM CDTSpecial Weather StatementLIXPearl River30 min
Jul 22, 4:03 PM CDTSpecial Weather StatementLIXPike27 min
Jul 22, 4:19 PM CDTSpecial Weather StatementLIXJackson41 min
Jul 22, 4:35 PM CDTSpecial Weather StatementLIXPike25 min
Jul 22, 5:10 PM CDTSpecial Weather StatementLIXHarrison, Jackson50 min
Jul 22, 5:43 PM CDTSpecial Weather StatementLIXHancock32 min
Jul 22, 5:57 PM CDTSpecial Weather StatementLIXHarrison48 min
Jul 22, 5:58 PM CDTSevere Thunderstorm WarningLIXHarrison, Jackson24 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2023Every severe thunderstorm warning in 2023

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.