Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 24, NWS Lake Charles, LA

April 27, 1990Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 27, 1990, 7:49 PM CDT for Tyler County, Texas. It was in force for 26 min.

The area

The counties it named.

The facts

Issued: Apr 27, 1990, 7:49 PM CDT (00:49 UTC)
Expired: Apr 27, 1990, 8:15 PM CDT
In force: 26 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 00:00Z, 0.8 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 934 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1032 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBPT 280049
SVRBPT
TXC403-241-351-457-280115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PORT ARTHUR TX
749 PM CDT FRI APR 27 1990
 
THE NATIONAL WEATHER SERVICE IN PORT ARTHUR HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PERSONS IN THE FOLLOWING COUNTIES
 
IN NORTHEAST TEXAS
 
   ...SABINE COUNTY
 
IN SOUTHEAST TEXAS
 
   ...NORTHERN JASPER COUNTY...NORTHERN NEWTON COUNTY...TYLER COUNTY
 
AT 745 PM CDT...WEATHER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS
ACROSS THE WARNED COUNTIES. THE LINE EXTENDED FROM HEMPHILL...TO
BROOKLEND...TO WEST OF JASPER...TO WEST OF WOODVILLE MOVING EAST AT 20
MPH. LARGE HAIL HAS BEEN REPORTED WITH THE STORMS WITHIN THIS LINE.
 
A TORNADO WAS LOCATED OVER LAKE RAYBURN WEST OF ZAVALA AT 735 PM.
 
DCG
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
NNNN

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, 5 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:15 PM CDT	Tornado Warning	LCH	San Augustine	30 min
Apr 27, 7:18 PM CDT	Severe Thunderstorm Warning	LCH	Jasper	27 min
Apr 27, 7:49 PM CDT	Severe Thunderstorm Warning	LCH	Jasper, Newton, Sabine	26 min
Apr 27, 8:14 PM CDT	Tornado Warning	LCH	Jasper	31 min
Apr 27, 9:50 PM CDT	Severe Thunderstorm Warning	LCH	Hardin, Jefferson	40 min
Apr 27, 11:45 PM CDT	Severe Thunderstorm Warning	LCH	Orange	30 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990 Every 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.