Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 64, NWS Lake Charles, LA

June 10, 1990Calcasieu Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 10, 1990, 4:02 PM CDT for Calcasieu Parish, Louisiana. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jun 10, 1990, 4:02 PM CDT (21:02 UTC)
Expired
Jun 10, 1990, 5:00 PM CDT
In force
58 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Calcasieu 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, 9.0 hours before the alert went out and 19 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 1990-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 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 1990-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.1939Sfc1 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
1021 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
13 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 102103
SVRLCH
LAC019-102200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
402 PM CDT SUN JUN 10 1990
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...CALCASIEU PARISH
 
AT 4PM CDT RADAR INDICATED A SEVERE THUNDERSTORM APPROACHING THE
REGIONAL AIRPORT. WINDS HAVE GUSTED TO 37 MPH AT THE AIRPORT.
THIS THUNDERSTORM WAS MOVING TOWARD THE NORTHWEST AT 20 MPH.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR /YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Jun 10, 3:42 PM CDT, 20 minutes before
LAZ005-006-007-008-011-012-102140-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
340 PM CDT SUN JUN 10 1990

AT 325 PM...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING
FROM NEAR WHITE LAKE AND ABBEVILLE TO THE TEXAS LOUISIANA BORDER NEAR
ORANGE TEXAS TO JUST NORTH OF LIBERTY TEXAS.

WIDELY SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN HAD DEVELOPED FROM 20
MILES NORTHWEST OF NATCHEZ MISSISSIPPI TO BETWEEN JENA AND WINNFIELD TO
JUST WEST OF WINNFIELD AND THE SOUTH END OF TOLEDO BEND RESERVOIR.

THE THUNDERSTORMS OVER LA SALLE AND GRANT PARISHES IN CENTRAL LOUISIANA
AND THOSE OVER CALCASIEU...CAMERON...AND VERMILION PARISHES IN SOUTHWEST
LOUISIANA MAY PRODUCE STRONG GUSTY WINDS...VERY HEAVY RAIN THAT WILL
CAUSE SOME LOCAL FLOODING OF STREETS AND OTHER LOW AREAS...AND DANGEROUS
LIGHTNING DURING THE NEXT HOUR.

ISOLATED SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER THE COASTAL SECTIONS
SOUTH OF NEW IBERIA AND MORGAN CITY AND JUST SOUTHEAST OF ALEXANDRIA.

SCATTERED SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN CONTINUED IN THE GULF
IN THE COASTAL WATERS AND TO BEYOND 100 MILES OFFSHORE FROM GALVESTON TO
VERMILION BAY.

Nearby

Severe Thunderstorm Warnings in Louisiana, 1990Every severe thunderstorm warning 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.