Alert archive / Louisiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 141, NWS Lake Charles, LA

July 30, 2000Acadia Parish, Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 30, 2000, 5:56 PM CDT for Acadia Parish, Jefferson Davis Parish, Louisiana. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Jul 30, 2000, 5:56 PM CDT (22:56 UTC)
Expired
Jul 30, 2000, 7:00 PM CDT
In force
64 min
Issued by
NWS Lake Charles, LA
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Acadia Parish, LA, Jefferson Davis Parish, LA

What was reported inside it

TimeReportWhereRemark
Jul 30, 6:00 PM CDTThunderstorm WindWelsh, LA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.9 hours before the alert went out and 51 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 2000-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1841 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 2000-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
1841 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
892 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
1 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.

341 
WUUS54 KLCH 302256
SVRLCH
LAC001-053-310000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
556 PM CDT SUN JUL 30 2000

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON DAVIS PARISH IN SOUTHWEST LOUISIANA
  ACADIA PARISH IN SOUTHWEST LOUISIANA

* UNTIL 700 PM CDT

* AT 553 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES WEST OF JENNINGS...MOVING EAST AT 30
  MPH.

* THIS STORM WILL BE NEAR...
  JENNINGS BY 610 PM CDT
  MERMENTAU BY 620 PM CDT
  ESTHERWOOD...IOTA BY 635 PM CDT
  CROWLEY BY 645 PM CDT
  BASILE BY 650 PM CDT

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

DESTRUCTIVE WINDS CAN BE EXPECTED - TAKE COVER NOW VEHICLES AND
MOBIL HOMES ARE NOT SAFE.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 3033 9295 3015 9292 3017 9232 3045 9236

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 Jul 30, 2:45 PM CDT, 3 hours 11 minutes earlier.

Area forecast discussion, Jul 30, 2:45 PM CDT, 3 hours 11 minutes before
SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
245 PM CDT SUN JUL 30 2000

FRONTAL BOUNDARY CURRENTLY STALLED FROM W. KY SOUTHWEST INTO EXTREME
NW LA THEN INTO CENTRAL TX. TSTM ACTIVITY ACROSS CNTRL AND S LA HAS
SLOWLY DIMINISHED WHILE COASTAL WATERS AND ALONG FRONTAL
BOUNDARY...ACTIVITY CONTINUES TO DEVELOP. AT 18Z...MODELS
INITIALIZED A LITTLE SLOW ON H5 LOW..DEPICTED OVR NE IL BUT MORE
LIKE W CNTRL MI. TROF AXIS THEN EXTENDS INTO NE TX. ETA MODEL APPEARS
TO HANDLE FRONTAL POSITION THE BEST. MORNING SOUNDING DATA SHOWED
PRECIPITABLE H2O VALUES RANGING FROM 1.7 TO NEAR 2 SOUTH OF BOUNDARY.
OVER THE NEXT 48HRS...EXPECT COLD FRONT TO WASH OUT...GENERALLY IN
ITS CURRENT POSITION. H5 LOW OVR W MI WILL FILL LEAVING TROF
GENERALLY IN CURRENT POSITION. DEEP MOISTURE AXIS WILL MOVE SOUTH AND
EAST...EXTENDING FROM EAST LA WEST ACROSS COASTAL WATER LATE MONDAY.
PRECIPITABLE WATER IS FORECAST TO DECREASE ACROSS INTERIOR SE TX AND
CENTRAL LA TONIGHT THROUGH MON. SOME INCREASE TUE. ALONG THE
COAST...SOME DRYING OCCURS MONDAY NIGHT...HOWEVER H7 TROF MOVES INTO
THE AREA TUESDAY WHICH INCREASES CHANCES FOR PCPN ACROSS COASTAL SE
TX AND S LA. PLENTY OF CAPPING INDICATED IN FORECAST SOUNDINGS ACROSS
INTERIOR SE TX WHICH WILL DAMPEN THE EFFECTS OF TROF.

TONIGHT...WILL KEEP WIDELY SCATTERED WORDING FOR CWA TONIGHT.
MOS TEMPERATURES APPEAR REASONABLE.

MONDAY...HAVE LITTLE MORE CONFIDENCE IN ETA DEPICTION FOR MONDAY.
WILL DECREASE POPS SLIGHTLY  BELOW MOS FOR THE LCH AREA...
LOWERING TO 30 PERCENT AEX AND LEAVE BPT ALONE. APPEARS THAT THE
BRUNT OF THE ACTIVITY WILL INITIATE ACROSS SW LA DURING THE MORNING
THEN SHIFT EASTWARD DURING THE AFTERNOON...ACTIVITY HANGS WITH
MOIST AXIS. TEMPS APPEAR REASONABLE...HOWEVER UP A FEW DEGREES FOR
LCH/BPT AND AEX.

MONDAY NIGHT...MOIST AXIS ALL BUT GONE FROM AREA.  SEE
NO PROBLEM WITH MOS LOWS.

TUE...EXPECT H7 TROF TO MOVE THROUGH AREA BRINGING SCATTERED
CONVECTION ACROSS S LA AND COASTAL SE TX. SOME INTERACTION WITH
SEABREEZE POSSIBLE AS IT WORKS INLAND.
16/15

.LCH...
LA...NONE.
TX...NONE.

PRELIM NUMBERS...
LCH 73/91/72/9-0 2414
LFT 74/89/73/92 2514
AEX 72/91/71/90 2312
BPT 74/92/73/91 2413

Nearby

Severe Thunderstorm Warnings in Louisiana, 2000Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.