Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 68, NWS Lake Charles, LA

June 25, 1990Calcasieu Parish, Cameron Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jun 25, 1990, 12:01 PM CDT for Calcasieu Parish, Cameron Parish, Louisiana. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jun 25, 1990, 12:01 PM CDT (17:01 UTC)
Expired
Jun 25, 1990, 1:00 PM CDT
In force
59 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 12:00Z, 5.0 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 12:00Z on 1990-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1230 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 1990-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 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
1230 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1115 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 251718 COR
SVRLCH
LAC019-023-251800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1201 PM CDT MON JUN 25 1990

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHWEST LOUISIANA

   ...CALCASIEU PARISH...CAMERON PARISH

AT 1158 AM...NATIONAL WEATHER SERVICE RADARS SHOWED A CLUSTER OF
SEVERE THUNDERSTORMS FROM JUST WEST OF LAKE CHARLES...TO 15 MILES
NORTH OF CAMERON.

THE THUNDERSTORMS WERE DRIFTING SOUTHEAST.
AT 1155 AM...THE PUBLIC REPORTED MARBLE SIZE HAIL IN THE VINTON AREA.

THIS IS A DANGEROUS STORM.  IF YOHU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

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 25, 10:54 AM CDT, 1 hour 7 minutes before
LAZ005-006-007-008-011-012-251653-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1053 AM CDT MON JUN 25 1990

AT 1035 AM...ISOLATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE
SHOWN FROM THE MANY AREA TO JUST SOUTHWEST OF WINNFIELD.  THE THUNDERSTORMS
WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.

WITH THIS PRESENT SPEED AND DIRECTION...THE THUNDERSTORMS WILL MOVE INTO
THE NORTH PART OF VERNON AND RAPIDES...AND WEST GRANT PARISH DURING THE
NEXT HALF HOUR.  STRONG GUSTY WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING
VERY HEAVY RAINFALL...AND SOME SMALL HAIL CAN BE EXPECTED WITH THESE
THUNDERSTORMS.

ELSEWHERE...ISOLATED SHOWERS AND THUNDERSTORMS...A FEW WuITH VERY HEAVY
RAIN...WERE OCCURRING OVER SOUTHEAST TEXAS FROM THE LIBERTY AREA...TO
BETWEEN KIRBYVILLE AND SABINE PASS.
Special weather statement, Jun 25, 11:48 AM CDT, 13 minutes before
LAZ005-006-007-008-011-012-251745-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1145 AM CDT MON JUN 25 1990

AT 1135 AM...SCATTERED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE
SHOWN FROM NORTH OF BLACK LAKE TO JUST WEST OF ALEXANDRIA.  THESE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.

THESE THUNDERSTORMS WILL LIKELY PRODUCE PERIODS OF VERY HEAVY RAIN..STRONG
GUSTY WINDS..DANGEROUS CLOUD TO GROUND LIGHTNING..AND POSSIBLY SOME SMALL
HAIL OVER GRANT AND RAPIDES PARISHES DURING THE NEAR HOUR AS THEY MOVE
SOUTHEAST AT 30 MPH.

SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWM FROM THE BEAUMONT
AREA TO JUST WEST OF LAKE CHARLES TO NEAR CAMERON MOVING SOUTHEAST AT 30
MPH.

THESE THUNDERSTORMS WILL BE MOVING THROUGH WESTERN CALCASIEU AND CAMERON
PARISHES DURING THE NEXT HOUR..BRINGING PERIODS OF HEAVY RAIN..STRONG
GUSTY WINDS..DANGEROUS LIGHTNING AND POSSIBLY SOME SMALL HAIL.
)
Special weather statement, Jun 25, 11:53 AM CDT, 8 minutes before
LAZ005-006-007-008-011-012-251745-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY CORRECTION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1145 AM CDT MON JUN 25 1990

AT 1135 AM...SCATTERED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE
SHOWN FROM NORTH OF BLACK LAKE TO JUST WEST OF ALEXANDRIA.  THESE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.

THESE THUNDERSTORMS WILL LIKELY PRODUCE PERIODS OF VERY HEAVY RAIN..STRONG
GUSTY WINDS..DANGEROUS CLOUD TO GROUND LIGHTNING..AND POSSIBLY SOME SMALL
HAIL OVER GRANT AND RAPIDES PARISHES DURING THE NEXT HOUR AS THEY MOVE
SOUTHEAST AT 30 MPH.

SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN WERE SHOWM FROM THE BEAUMONT
AREA TO JUST WEST OF LAKE CHARLES TO NEAR CAMERON MOVING SOUTHEAST AT 30
MPH.

THESE THUNDERSTORMS WILL BE MOVING THROUGH WESTERN CALCASIEU AND CAMERON
PARISHES DURING THE NEXT HOUR..BRINGING PERIODS OF HEAVY RAIN..STRONG
GUSTY WINDS..DANGEROUS LIGHTNING AND POSSIBLY SOM1E SMALL HAIL.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 11:51 AM CDTSevere Thunderstorm WarningLCHGrant, Rapides69 min
Jun 25, 1:07 PM CDTSevere Thunderstorm WarningLCHCameron68 min
Jun 25, 1:54 PM CDTSevere Thunderstorm WarningLCHBeauregard, Calcasieu66 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.