Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 9, NWS New Orleans, LA

February 17, 1992Saint Charles Parish, Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Feb 17, 1992, 12:46 AM CST for Saint Charles Parish, Saint John the Baptist Parish, Louisiana. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Feb 17, 1992, 12:46 AM CST (06:46 UTC)
Expired
Feb 17, 1992, 1:45 AM CST
In force
59 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Saint Charles Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.8 hours before the alert went out and 73 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 00:00Z on 1992-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 00:00Z on 1992-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
13 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 11:29 PM CSTSevere Thunderstorm WarningLIXAssumption, Saint Martin, St. Mary61 min
Feb 17, 12:19 AM CSTSevere Thunderstorm WarningLIXLafourche, Terrebonne56 min
Feb 17, 12:30 AM CSTSevere Thunderstorm WarningLIXSt. Mary60 min
Feb 17, 12:46 AM CSTSevere Thunderstorm WarningLIXJefferson59 min
Feb 17, 1:31 AM CSTSevere Thunderstorm WarningLIXSaint Tammany59 min
Feb 17, 1:37 AM CSTSevere Thunderstorm WarningLIXOrleans, Plaquemines, Saint Bernard68 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1992Every severe thunderstorm warning in 1992

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.