Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 124, NWS New Orleans, LA

November 20, 1992Iberia Parish, Saint Martin Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Nov 20, 1992, 4:54 AM CST for Iberia Parish, Saint Martin Parish, Louisiana. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Nov 20, 1992, 4:54 AM CST (10:54 UTC)
Expired
Nov 20, 1992, 6:00 AM CST
In force
66 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Iberia Parish, LA, Saint Martin Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.9 hours before the alert went out and 146 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, Lake Charles Mun, LA at 00:00Z on 1992-11-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 370 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, Lake Charles Mun, LA at 00:00Z on 1992-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
370 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
637 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

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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
Nov 20, 6:03 AM CSTSevere Thunderstorm WarningLIXIberia, Saint Martin42 min
Nov 20, 6:44 AM CSTSevere Thunderstorm WarningLIXSt. Mary, Terrebonne61 min
Nov 20, 7:50 AM CSTSevere Thunderstorm WarningLIXAssumption, Terrebonne70 min
Nov 20, 8:24 AM CSTSevere Thunderstorm WarningLIXLafourche, Saint Charles, Saint John the Baptist51 min
Nov 20, 9:06 AM CSTSevere Thunderstorm WarningLIXJefferson, Orleans69 min
Nov 20, 9:06 AM CSTSevere Thunderstorm WarningLIXTangipahoa69 min
Nov 20, 9:12 AM CSTSevere Thunderstorm WarningLIXSaint Charles, Saint John the Baptist33 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.