Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 29, NWS Lake Charles, LA

April 6, 2019Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 6, 2019, 9:05 AM CDT for Jasper County, Tyler County, Texas. 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
Apr 6, 2019, 9:05 AM CDT (14:05 UTC)
Expired
Apr 6, 2019, 9:45 AM CDT
In force
40 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Jasper County, TX, Tyler County, TX

The radar

The Lake Charles radar (KLCH), 118 km from the middle of the area, began a volume at 14:08 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

Shreveport, LA (KBAD), launched 12:00Z, 2.1 hours before the alert went out and 196 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, Shreveport, LA at 12:00Z on 2019-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 242 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, Shreveport, LA at 12:00Z on 2019-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
242 J/kg
Mixed-layer CIN
-295 J/kg
Mixed-layer LCL
570 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
240 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

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 Apr 6, 8:29 AM CDT, 36 minutes earlier.

Area forecast discussion, Apr 6, 8:29 AM CDT, 36 minutes before
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Hazardous weather outlook, Apr 6, 5:15 AM CDT, 3 hours 50 minutes before
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    <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.
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        Please try again in a few minutes.
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In the hours before

Special weather statement, Apr 6, 8:58 AM CDT, 7 minutes before
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<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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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 10:02 PM CDTMarine Dense Fog AdvisoryLCH15 hr
Apr 6, 8:26 AM CDTDense Fog AdvisoryLCHCameron, Lafayette, Saint Martin2 hr
Apr 6, 10:58 AM CDTSpecial Weather StatementLCHVernon47 min
Apr 6, 11:32 AM CDTSevere Thunderstorm WarningLCHRapides, Vernon58 min
Apr 6, 12:31 PM CDTSpecial Weather StatementLCHRapides44 min
Apr 6, 1:19 PM CDTSpecial Weather StatementLCHAvoyelles41 min
Apr 6, 1:31 PM CDTSevere Thunderstorm WarningLCHAvoyelles, Rapides29 min
Apr 6, 1:33 PM CDTSpecial Weather StatementLCHVernon27 min
Apr 6, 8:58 AM CDTSpecial Weather StatementLCHTyler32 min
Apr 6, 9:47 AM CDTSpecial Weather StatementLCHSabine43 min
Apr 6, 11:01 AM CDTSpecial Weather StatementLCHJasper, Tyler44 min
Apr 6, 11:49 AM CDTSpecial Weather StatementLCHTyler41 min
Apr 6, 12:23 PM CDTSpecial Weather StatementLCHJasper52 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019Every severe thunderstorm warning in 2019

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.