Alert archive / Texas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 13, NWS Lake Charles, LA

April 8, 1989San Augustine County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 8, 1989, 6:20 PM CDT for San Augustine County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Apr 8, 1989, 6:20 PM CDT (23:20 UTC)
Expired
Apr 8, 1989, 7:20 PM CDT
In force
60 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County San Augustine 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

Longview/Gregg, TX (KGGG), launched 12:00Z, 11.3 hours before the alert went out and 114 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, Longview/Gregg, TX at 12:00Z on 1989-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 164 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, Longview/Gregg, TX at 12:00Z on 1989-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 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
164 J/kg
Mixed-layer CIN
-479 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
655 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBPT 082326 COR
SVRBPT
TXC405-090020-

BULLETIN-IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WARNING...CORRECTED...
NATIONAL WEATHER SERVICE PORT ARTHUR TX
620 PM CDT SAT APR 08 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING FOR PERSONS IN THE FOLLOWING COUNTIES OF

TEXAS...SAN AUGUSTINE EFFECTIVE UNTIL 720 PM TONIGHT.

STRONG THUNDERSTORMS WERE IN THE EAST TEXAS LAKES AREA OVER SAM
RAYBURN RESERVOIR TO EAST OF BROADDUS TEXAS. THESE THUNDERSTORMS
ARE ASSOCIATED WITH A COLD FRONT AND WILL PRODUCE STRONG GUSTY
WINDS..HEAVY RAINFALL..FREQUENT LIGHTNING AND POSSIBLE HAIL.

THEY ARE MOVING EAST AT 20 MPH AND WILL BE NEAR SABINE COUNTY
LATER.

Nearby

Severe Thunderstorm Warnings in Texas, 1989Every severe thunderstorm warning in 1989

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.