Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 65, NWS Lake Charles, LA

June 23, 1990Cameron Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 23, 1990, 1:49 PM CDT for Cameron Parish, Vermilion Parish, Louisiana. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jun 23, 1990, 1:49 PM CDT (18:49 UTC)
Expired
Jun 23, 1990, 2:45 PM CDT
In force
56 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

Counties Cameron Parish, LA, Vermilion 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, 6.8 hours before the alert went out and 54 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 1990-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2083 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 1990-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
2083 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
10 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 231851
SVRLCH
LAC023-113-231945-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
149 PM CDT SAT JUN 23 1990
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST LOUISIANA
 
   ...EASTERN CAMERON PARISH...SOUTHERN VERMILION PARISH
 
AT 148 PM...THE LAKE CHARLES WEATHER RADAR SHOWED A SEVERE
THUNDERSTORM NEAR WHITE LAKE OR 25 MILES SOUTHWEST OF ABBEVILLE.
 
THE THUNDERSTORM WAS MOVING SOUTHEAST AT 25 MILES AN HOUR.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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 23, 1:43 PM CDT, 6 minutes before
LAZ005-006-007-008-011-012-231945-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
140 PM CDT SAT JUN 23 1990

AT 125 PM...AN ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN HAD DEVELOPED
JUST NORTH OF WHITE LAKE AND WAS MOVING SOUTHEAST AT 20 MPH.

PERIODS OF VERY HEAVY RAIN CAN BE EXPECTED OVER WHITE LAKE AND IN THE
PECAN ISLAND AREA DURING THE NEXT HOUR AS THE THUNDERSTORM MOVES THROUGH.

ISOLATED PATCHES OF RAIN WERE SHOWN FROM NEAR VILLE PLATTE TO CROWLEY TO
SOUTHWEST OF GRAND LAKE.

SCATTERED THUNDERSTORMS CONTINUED OVER THE GULF IN A 20 MILE WIDE AREA
FROM 70 TO 110 MILES SOUTHEAST OF CAMERON AND WERE MOVING SOUTHWEST AT
20 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 2:53 PM CDTSevere Thunderstorm WarningLCHCameron, Vermilion67 min

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.