Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 93, NWS Lake Charles, LA

September 2, 1997Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Sep 2, 1997, 3:16 PM CDT for Tyler County, Texas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 2, 1997, 3:16 PM CDT (20:16 UTC)
Expired
Sep 2, 1997, 4:00 PM CDT
In force
44 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Tyler County, TX

The radar

The Lake Charles radar (KLCH), 132 km from the middle of the area, began a volume at 20:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.3 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 1997-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2182 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 1997-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
2182 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
967 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
19 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 KLCH 022016 RRA
SVRLCH
TXC457-022100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
316 PM CDT TUE SEP 2 1997
 
THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST TEXAS
 
   ...TYLER COUNTY
 
AT 312 PM CDT...LAKE CHARLES NATIONAL WEATHER SERVICE RADAR INDICATED
A SEVERE THUNDERSTORM 8 MILES NORTHEAST OF WOODVILLE. THIS STORM
WAS MOVING SOUTHWEST AT 15 MPH AND WILL MOVE ACROSS WOODVILLE BY
330 PM.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
 
&

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.

NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 2, 3:06 PM CDT, 10 minutes earlier.

Area forecast discussion, Sep 2, 3:06 PM CDT, 10 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
300 PM CDT TUE SEP 2 1997

SCTATTERED TSRA /SHRA ACROSS CWA THIS AFT BEING ENHANCED BY A
WEAK SHORT WAVE MOVING BTWN UPPR HI AND LOW. CONVECTIVE TEMPS
ALSO CONSIDERABLY LOWER WITH DEEPER LOW-LVL MSTR IN PLACE. ADAP
CHARTS INDICATE SFC LI/S OF -8 TO -10 WITH A COOL POCKET AT 50H.
THUS...WUD LIKE TO INTRODUCE SCT POPS THRU THE EVE ACROSS ALL OF
CWA.

THE REMAINDER OF THE FP WL SEE RE-AMPLIFICATION OF THE TROF ACROSS
THE EASTERN U.S. WITH THE UPPER HI REMAINING HIGHLY AMPLIFIED
ACROSS THE PLAINS. THIS WL SEND A COLD FRONT ACROSS THE RGN OVERNITE
WED FOR THE CENTRAL LA /UPPER SE TX ZONES...AND ACROSS THE COASTAL
ZONES ON THU MORNING. THE MAIN ENERGY WITH THIS SYSTEM REAMINS WELL
NORTH AND EAST OF THE FA AS DOES THE COOLER AIR. HWVR...WITH
SUFFICIENT FNTL FORCING EXPECTED...GOOD CHC POPS SEEM TO BE IN
ORDER FOR WED NITE. ONE INHIBITING FACTOR MAY BE THE LOSS OF DAYTIME
HEATING WHICH SHUD DAMPEN THE SFC INSTABILITY. WL ALSO MAINTAIN WDLY
SCT POPS ACROSS THE FA ON WED AFT WITH LITTLE CHANGE IN THE AMS FROM
THIS AFT. SFC WINDS RMN NE THUR THE FP...BUT MAY BRIEFLY GO VARIABLE
LATE WED AS THE FRONT APPROACHES AND AREA GETS IN A COL. WL
STAY IN LINE WITH NGM MOS THROUGH THE THREE PERIODS...AND THEN
DEVIATE ON THE WARMER SIDE ON THU.

5

BPT 73/93/73/92 2243
LCH 73/93/73/92 2243  LFT 74/92/74/93  AEX  69/91/69/88 2341

Nearby

Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.