Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 105, NWS Shreveport, LA

March 6, 1998San Augustine County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 6, 1998, 10:34 PM CST for San Augustine County, Texas. It was in force for 31 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 6, 1998, 10:34 PM CST (04:34 UTC)
Expired
Mar 6, 1998, 11:05 PM CST
In force
31 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County San Augustine County, TX

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.6 hours before the alert went out and 169 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 00:00Z on 1998-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 904 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 00:00Z on 1998-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939587897117Sfc1 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
904 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
617 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.1

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 6, 10:00 PM CST, 34 minutes earlier.

Area forecast discussion, Mar 6, 10:00 PM CST, 34 minutes before
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In the hours before

Local storm report, Mar 6, 7:39 PM CST, 2 hours 55 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Mar 6, 7:39 PM CST, 2 hours 55 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 7, 3:08 AM CSTSevere Thunderstorm WarningSHVWood32 min
Mar 7, 4:23 AM CSTSevere Thunderstorm WarningSHVCass47 min
Mar 7, 5:14 AM CSTSevere Thunderstorm WarningSHVFranklin46 min
Mar 7, 7:48 AM CSTSevere Thunderstorm WarningSHVAngelina47 min
Mar 7, 8:20 AM CSTTornado WarningSHVAngelina50 min
Mar 7, 8:44 AM CSTSevere Thunderstorm WarningSHVSabine, San Augustine46 min
Mar 7, 10:11 AM CSTSevere Thunderstorm WarningSHVShelby49 min
Mar 7, 1:43 PM CSTSevere Thunderstorm WarningSHVMarion37 min
Mar 6, 6:56 PM CSTSevere Thunderstorm WarningSHVNatchitoches49 min
Mar 7, 12:54 AM CSTSevere Thunderstorm WarningSHVOuachita51 min
Mar 7, 5:28 AM CSTSevere Thunderstorm WarningSHVLaSalle62 min
Mar 7, 7:00 AM CSTSevere Thunderstorm WarningSHVGrant50 min
Mar 7, 7:07 AM CSTSevere Thunderstorm WarningSHVLaSalle48 min
Mar 7, 7:40 AM CSTSevere Thunderstorm WarningSHVWinn35 min
Mar 7, 7:52 AM CSTSevere Thunderstorm WarningSHVJackson48 min
Mar 7, 8:47 AM CSTSevere Thunderstorm WarningSHVBienville63 min
Mar 7, 9:07 AM CSTSevere Thunderstorm WarningSHVSabine63 min
Mar 7, 9:45 AM CSTSevere Thunderstorm WarningSHVDe Soto50 min
Mar 7, 10:52 AM CSTSevere Thunderstorm WarningSHVClaiborne, Union33 min
Mar 7, 11:17 AM CSTSevere Thunderstorm WarningSHVLaSalle33 min
Mar 7, 5:46 PM CSTSevere Thunderstorm WarningSHVSabine49 min
Mar 7, 8:28 AM CSTSevere Thunderstorm WarningSHVHoward32 min
Mar 7, 11:02 AM CSTSevere Thunderstorm WarningSHVUnion48 min
Mar 7, 11:33 AM CSTSevere Thunderstorm WarningSHVLittle River, Sevier62 min
Mar 7, 12:23 PM CSTSevere Thunderstorm WarningSHVHempstead32 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.