Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 100, NWS Lake Charles, LA

March 7, 1998Jefferson Davis Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 7, 1998, 7:50 AM CST for Jefferson Davis Parish, Louisiana. It was in force for 40 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
Mar 7, 1998, 7:50 AM CST (13:50 UTC)
Expired
Mar 7, 1998, 8:30 AM CST
In force
40 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Jefferson Davis Parish, LA

The radar

The Lake Charles radar (KLCH), 42 km from the middle of the area, began a volume at 13:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 7, 3:45 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.8 hours before the alert went out and 41 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 1998-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 1998-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.193958Sfc1 km3 km6 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
666 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
285 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Mar 7, 1:55 AM CST, 5 hours 55 minutes earlier.

Area forecast discussion, Mar 7, 1:55 AM CST, 5 hours 55 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
155 AM CST SAT MAR 7 1998

STRONGEST ACTIVITY NOW PUSHING NORTHEAST OF FA WITH ACTIVITY
REDEVELOPING ALONG COASTAL SECTIONS WHERE JET SUPPORT CONTINUES. NEXT
BOUT OF SEVERE WEATHER STILL ON TAP BEGINNING LATE THIS MORNING...
CONTINUING INTO THIS EVENING WHEN SURFACE COLD FRONT SWEEPS EAST
ACROSS FA. MODELS STILL SHOWING IMPRESSIVE DIRECTIONAL DIVERGENCE
UPSTREAM DEVELOPING/DEEPENING UPPER LEVEL LOW. FLASH FLOOD WATCH
THROUGH THIS EVENING STILL LOOKS GOOD DUE TO RECENT RAINS...00Z LCH
SOUNDING SHOWED PW VALUES AROUND 1.7 INCHES. PATCHY FOG REDEVELOPING
ALONG COASTAL SECTIONS THIS MORNING...HOWEVER NOT EXPECTING WIDESPREAD
DENSE FOG. LITTLE CHANGE IN TEMPERTURES EXPECTED TODAY AS THICKNESSES
CHANGE LITTLE.
09

BPT 76/57/65 850
LCH 75/59/65 850  LFT 74/60/66 860  AEX 70/56/64 870

TX ZONES...

LA ZONES...

In the hours before

Local storm report, Mar 7, 6:41 AM CST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
641 AM CST SAT MAR 7 1998

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

500 AM     MERMENTAU              LA      0.75 INCH HAIL
03/07/98   ACADIA

ERICKSON
Local storm report, Mar 7, 6:41 AM CST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
641 AM CST SAT MAR 7 1998

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

500 AM     MERMENTAU              LA      0.75 INCH HAIL
03/07/98   ACADIA

ERICKSON
Local storm report, Mar 7, 6:58 AM CST, 52 minutes before
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Local storm report, Mar 7, 6:58 AM CST, 52 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Mar 7, 7:50 AM CST, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
750 AM CST SAT MAR 7 1998

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

700 AM     5 S SULPHUR            LA      0.75 INCH HAIL
03/07/98   CALCASIEU                      IN CARLYSS AREA

ERICKSON
Local storm report, Mar 7, 7:50 AM CST, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
750 AM CST SAT MAR 7 1998

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

700 AM     5 S SULPHUR            LA      0.75 INCH HAIL
03/07/98   CALCASIEU                      IN CARLYSS AREA

ERICKSON

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 11:48 PM CSTSevere Thunderstorm WarningLCHJefferson Davis
Mar 7, 2:42 AM CSTSevere Thunderstorm WarningLCHCameron63 min
Mar 7, 3:41 AM CSTSevere Thunderstorm WarningLCHAllen59 min
Mar 7, 3:51 AM CSTSevere Thunderstorm WarningLCHCameron34 min
Mar 7, 3:57 AM CSTSevere Thunderstorm WarningLCHVermilion58 min
Mar 7, 4:36 AM CSTSevere Thunderstorm WarningLCHRapides59 min
Mar 7, 4:40 AM CSTTornado WarningLCHVermilion65 min
Mar 7, 4:55 AM CSTSevere Thunderstorm WarningLCHAcadia45 min
Mar 7, 5:11 AM CSTSevere Thunderstorm WarningLCHBeauregard44 min
Mar 7, 5:17 AM CSTSevere Thunderstorm WarningLCHIberia63 min
Mar 7, 5:57 AM CSTSevere Thunderstorm WarningLCHCalcasieu43 min
Mar 7, 6:24 AM CSTSevere Thunderstorm WarningLCHCameron61 min
Mar 7, 6:36 AM CSTSevere Thunderstorm WarningLCHCalcasieu49 min
Mar 7, 6:45 AM CSTFlash Flood WarningLCHCalcasieu2 hr
Mar 7, 1:26 PM CSTSevere Thunderstorm WarningLCHBeauregard44 min
Mar 7, 1:50 PM CSTSevere Thunderstorm WarningLCHAllen45 min
Mar 7, 2:14 PM CSTSevere Thunderstorm WarningLCHRapides56 min
Mar 7, 2:20 PM CSTSevere Thunderstorm WarningLCHSaint Landry60 min
Mar 7, 2:51 PM CSTSevere Thunderstorm WarningLCHBeauregard34 min
Mar 7, 2:58 PM CSTSevere Thunderstorm WarningLCHVernon47 min
Mar 7, 3:49 PM CSTSevere Thunderstorm WarningLCHVernon46 min
Mar 7, 4:11 AM CSTSevere Thunderstorm WarningLCHJefferson49 min
Mar 7, 4:31 AM CSTSevere Thunderstorm WarningLCHOrange44 min
Mar 7, 5:21 AM CSTSevere Thunderstorm WarningLCHJefferson59 min
Mar 7, 5:33 AM CSTSevere Thunderstorm WarningLCHOrange47 min
Mar 7, 5:49 AM CSTSevere Thunderstorm WarningLCHHardin31 min
Mar 7, 6:54 AM CSTSevere Thunderstorm WarningLCHNewton31 min
Mar 7, 5:27 PM CSTSevere Thunderstorm WarningLCHJasper48 min
Mar 7, 5:52 PM CSTSevere Thunderstorm WarningLCHNewton63 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1998Every severe thunderstorm warning in 1998

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.