Alert archive / Louisiana / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 4, NWS Lake Charles, LA

April 18, 1988Evangeline Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 18, 1988, 4:21 PM CDT for Evangeline Parish, Louisiana. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Apr 18, 1988, 4:21 PM CDT (21:21 UTC)
Expired
Apr 18, 1988, 5:15 PM CDT
In force
54 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Evangeline Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 12:00Z, 9.4 hours before the alert went out and 275 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, Longview/Gregg, TX at 12:00Z on 1988-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 940 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, Longview/Gregg, TX at 12:00Z on 1988-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
940 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.2

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The text

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

Nearby

Severe Thunderstorm Warnings in Louisiana, 1988Every severe thunderstorm warning in 1988

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.