Alert archive / Louisiana / Tornado Warnings in 1990

Tornado Warning 5, NWS Lake Charles, LA

April 6, 1990Calcasieu Parish, Cameron Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 6, 1990, 6:39 AM CDT for Calcasieu Parish, Cameron Parish, Louisiana. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Apr 6, 1990, 6:39 AM CDT (11:39 UTC)
Expired
Apr 6, 1990, 7:30 AM CDT
In force
51 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Calcasieu Parish, LA, 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 00:00Z, 11.7 hours before the alert went out and 12 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 1990-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1300 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
105 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 061145
TORLCH
LAC019-023-061230-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
639 AM CDT FRI APR 6 1990
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...CALCASIEU PARISH...CAMERON PARISH
 
AT 637 AM CDT A LINE OF SEVERE THUNDERSTORMS WAS SHOWN BY RADAR FROM
THE DE QUINCY AREA TO 15 MILES WEST OF LAKE CHARLES TO 20 MILES WEST
OF CAMERON.  THE LINE WAS MOVING SOUTHEAST AT 40 MILES AN HOUR.
 
A TORNADO WAS REPORTED TO HAVE TOUCHED DOWN AS THE SOUTH END OF THE
LINE MOVED THROUGH THE MAURICEVILLE TEXAS AREA WHICH IS JUST NORTH-
WEST OF ORANGE TEXAS.
 
 
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 Y?OUR BODY.  AVOID WINDOWS.

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.