Alert archive / Louisiana / Tornado Warnings in 1990

Tornado Warning 12, NWS Lake Charles, LA

April 27, 1990Evangeline Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Apr 27, 1990, 9:51 PM CDT for Evangeline Parish, Louisiana. It was in force for 54 min.

The area

The counties it named.

The facts

Issued: Apr 27, 1990, 9:51 PM CDT (02:51 UTC)
Expired: Apr 27, 1990, 10:45 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.9 hours before the alert went out and 102 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 934 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1032 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 280254
TORLCH
LAC039-280345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
951 PM CDT FRI APR 27 1990
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...EVANGELINE PARISH
 
AT 945 PM CDT A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM 20 MILES
EAST OF LEESVILLE TO JUST WEST OF OAKDALE TO JUST EAST OF DE QUINCY.
 
THE LINE CONTINUED TO MOVE EAST AT 45 MPH AND WILL MOVE INTO THE
WESTERN EDGE OF EVANGELINE PARISH AROUND 10 PM CDT.
 
THE THUNDERSTORM THAT HAS ALREADY PRODUCED THREE TORNADO TOUCHDOWNS
IN BEAUREGARD PARISH WAS LOCATED JUST SOUTHWEST OF OAKDALE AT 945 PM.
 
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.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 27, 7:44 PM CDT, 2 hours 7 minutes before

LAZ005-006-007-008-011-012-280145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
742 PM CDT FRI APR 27 1990

...A TORNADO WATCH IS IN EFFECT THIS FRIDAY NIGHT AND SATURDAY MORNING
FOR CENTRAL AND SOUTHWEST LOUISIANA UNTIL 200 AM...

AT 725 PM...ISOLATED STRONG THUNDERSTORMS WERE SHOWN IN TEXAS FROM
KOUNTZE TO JUST NORTHWEST OF SAN AUGUSTINE. THE THUNDERSTORMS WERE
MOVING SOUTHEAST AT 25 MILES AN HOUR.

STRONG GUSTY WINDS....DANGEROUS CLOUD TO GROUND LIGHTNING...PERIODS
OF VERY HEAVY RAIN...AND SOME HAIL CAN BE EXPECTED WITH THESE
THUNDERSTORMS.

A LARGE AREA OF RAIN MIXED WITH ISOLATED THUNDERSTORMS WAS DETECTED IN
TEXAS FROM THE CONROE AND LAKE LIVINGSTON AREAS....TO NEAR THE NORTHERN
END OF TOLEDO BEND RESERVIOR.

Special weather statement, Apr 27, 8:47 PM CDT, 1 hour 4 minutes before

LAZ005-006-007-008-011-012-280245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
840 PM CDT FRI APR 27 1990

...A TORNADO WATCH IS IN EFFECT THIS FRIDAY NIGHT AND SATURDAY MORNING
FOR CENTRAL AND SOUTHWEST LOUISIANA UNTIL 200 AM...

AT 825 PM...VERY STRONG THUNDERSTORMS WERE MOVING INTO WEST CENTRAL
AND SOUTHWEST LOUISIANA FROM SOUTHEAST TEXAS. IN LOUISIANA ONE WAS
LOCATED BETWEEN CONVERSE AND MANY...AND OVER SOUTHEAST TEXAS LOCATIONS
WERE JUST EAST OF SAN AUGUSTINE OVER TOLEDO BEND RESERVOIR...AND OVER
KIRBYSVILLE.  THESE THUNDERSTORMS LIKELY CONTAIN LARGE HAIL...GUSTY
WINDS...VERY HEAVY RAINFALL AND DANGEROUS LIGHTNING.

OTHER STRONG THUNDERSTORMS WgERE ACROSS SOUTHEAST TEXAS AND WESTERN
LOUISIANA FROM SHREVEPORT TO BEAUMONT. AND NEAR LAKE LIVINGSTON IN
SOUTHEAST TEXAS.

MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 8:42 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	63 min
Apr 27, 8:50 PM CDT	Tornado Warning	LCH	Beauregard	40 min
Apr 27, 9:15 PM CDT	Severe Thunderstorm Warning	LCH	Ouachita	2 hr
Apr 27, 9:15 PM CDT	Severe Thunderstorm Warning	LCH	Grant, LaSalle, Rapides	2 hr
Apr 27, 9:26 PM CDT	Tornado Warning	LCH	Allen, Beauregard	49 min
Apr 27, 11:49 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu, Cameron	56 min
Apr 28, 12:42 AM CDT	Severe Thunderstorm Warning	LCH	Cameron	48 min

Nearby

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