Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 19, NWS Lake Charles, LA

April 27, 1990Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 27, 1990, 6:49 PM CDT for Tyler County, Texas. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1990, 6:49 PM CDT (23:49 UTC)
Expired
Apr 27, 1990, 7:45 PM CDT
In force
56 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Tyler County, TX

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, 11.8 hours before the alert went out and 134 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 1990-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 1990-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
8 J/kg
Mixed-layer CIN
-264 J/kg
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
48 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 KBPT 272345
SVRBPT
TXC457-280045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PORT ARTHUR TX
649 PM CDT FRI APR 27 1990

THE NATIONAL WEATHER SERVICE IN PORT ARTHUR HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CDT
FOR PERSONS IN THE FOLLOWING COUNTIES

IN EAST CENTRAL TEXAS

   ...TYLER COUNTY

A SEVERE THUNDERSTORM HAS MOVED INTO SOUTHWEST ANGELINA COUNTY MOVING
EAST AT 30 MPH. THIS THUNDERSTORM WILL PRODUCE DAMAGING THUNDERSTORM
WINDS WITH LARGE HAIL AND VERY HEAVY RAINFALL.

THE THUNDERSTORM WILL BE NEAR THE TOWN OF WOODVILLE WITHIN THE NEXT
15 MINUTES.

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.

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 6:39 PM CDTSevere Thunderstorm WarningLCHAngelina66 min
Apr 27, 6:51 PM CDTSevere Thunderstorm WarningLCHHardin39 min
Apr 27, 6:51 PM CDTSevere Thunderstorm WarningLCHNacogdoches39 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.