Alert archive / Louisiana / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 117, NWS New Orleans, LA

June 25, 2019Livingston Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 25, 2019, 5:28 PM CDT for Livingston Parish, Tangipahoa Parish, Louisiana. It was in force for 32 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
Jun 25, 2019, 5:28 PM CDT (22:28 UTC)
Expired
Jun 25, 2019, 6:00 PM CDT
In force
32 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Livingston Parish, LA, Tangipahoa Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.5 hours before the alert went out and 89 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, Slidell Radar S, LA at 12:00Z on 2019-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2348 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, Slidell Radar S, LA at 12:00Z on 2019-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.193958Sfc1 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
2348 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
882 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 2:07 PM CDTSpecial Weather StatementLIXPointe Coupee, West Feliciana38 min
Jun 25, 2:48 PM CDTSpecial Weather StatementLIXEast Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana57 min
Jun 25, 4:03 PM CDTSpecial Weather StatementLIXEast Baton Rouge42 min
Jun 25, 4:54 PM CDTSpecial Weather StatementLIXLivingston51 min
Jun 25, 5:09 PM CDTSpecial Weather StatementLIXTangipahoa51 min
Jun 25, 5:34 PM CDTSpecial Marine WarningLIX56 min
Jun 25, 5:38 PM CDTSpecial Weather StatementLIXSaint John the Baptist37 min
Jun 25, 5:44 PM CDTSpecial Weather StatementLIXWashington46 min
Jun 25, 6:08 PM CDTSpecial Weather StatementLIXSaint Tammany, Washington52 min
Jun 25, 6:14 PM CDTSpecial Marine WarningLIX46 min
Jun 25, 6:25 PM CDTSpecial Weather StatementLIXSaint John the Baptist35 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2019Every severe thunderstorm warning in 2019

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.