Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 26, NWS Lake Charles, LA

April 27, 1990Ouachita Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 27, 1990, 9:15 PM CDT for Ouachita Parish, Louisiana. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 27, 1990, 9:15 PM CDT (02:15 UTC)
Expired
Apr 27, 1990, 11:15 PM CDT
In force
2 hr
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Ouachita 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

Jackson, MS (KJAN), launched 00:00Z, 2.3 hours before the alert went out and 196 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, Jackson, MS at 00:00Z on 1990-04-28Temperature 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, Jackson, MS at 00:00Z on 1990-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.19395878Sfc1 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
736 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Apr 27, 7:44 PM CDT, 1 hour 31 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, 28 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.

IssuedProductOfficeCountiesLasted
Apr 27, 8:42 PM CDTSevere Thunderstorm WarningLCHBeauregard, Vernon63 min
Apr 27, 8:50 PM CDTTornado WarningLCHBeauregard40 min
Apr 27, 9:15 PM CDTSevere Thunderstorm WarningLCHGrant, LaSalle, Rapides2 hr
Apr 27, 9:26 PM CDTTornado WarningLCHAllen, Beauregard49 min
Apr 27, 9:51 PM CDTTornado WarningLCHEvangeline54 min
Apr 27, 11:49 PM CDTSevere Thunderstorm WarningLCHCalcasieu, Cameron56 min
Apr 28, 12:42 AM CDTSevere Thunderstorm WarningLCHCameron48 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.