Alert archive / Louisiana / Tornado Warnings in 1990

Tornado Warning 4, NWS Lake Charles, LA

April 2, 1990Cameron Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 2, 1990, 10:10 AM CDT for Cameron Parish, Louisiana. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Apr 2, 1990, 10:10 AM CDT (15:10 UTC)
Expired
Apr 2, 1990, 10:45 AM CDT
In force
35 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Cameron 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.2 hours before the alert went out and 30 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 12:00Z on 1990-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 268 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 12:00Z on 1990-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.1939587897117Sfc1 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
268 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLCH 021516
TORLCH
LAC023-021545-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1010 AM CDT MON APR 2 1990
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1045 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...EASTERN CAMERON PARISH
 
AT 1010 AM CDT RADAR SHOWED A POSSIBLE TORNADO 10 MILES NORTHEAST OF
CAMERON LOUISIANA.
 
MOVEMENT WAS EAST AT 15 MILES AN HOUR.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...SEEK SHELTER IN A NEARBY
REINFORCED BUILDING.  GET UNDER A PIECE OF STURDY FURNITURE
PREFERABLY IN AN INTERIOR ROOM ON THE LOWEST FLOOR.  USE BLANKETS
OR PILLOWS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 2, 3:22 PM CDTSevere Thunderstorm WarningLCHCalcasieu, Cameron68 min

Nearby

Tornado Warnings in Louisiana, 1990Every tornado warning in 1990Tornadoes in 1990

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.